2026 High in the Benner Cycle | "Time to Sell Stocks and Values of all Kinds"

"Benner's Prophecies of Future Ups and Downs in Prices" was authored by Samuel T. Benner and first published in 1875. Benner was an Ohio farmer who, after suffering heavy losses during the Panic of 1873, became intensely interested in the recurring patterns of economic booms and busts. 

 

 » Periods When to Make Money. «  Original business card of George Tritch Hardware Co., 1872.

Through his studies, he identified repeating 8-9-10, 16-18-20, and 27-year cycles that he believed aligned with both lunar cycles, solar activity, and major economic turning points. According to analyses of historical events, his forecasts achieved roughly 90% accuracy (more background HERE). For 2025, Benner’s cycle predicted the US stock market driving higher. For 2026, Benner's chart forecasts a major stock market top: "High Prices and the Time to Sell Stocks and Values of All Kinds" into 2032 ["Years of Hard Times, Low Prices, and a Good Time to Buy Stocks"].   

 » "B." [2026] Years of Good Times. High Prices and the Time to Sell Stocks and Values of All Kinds. «  

  

Benner Cycle Forecast for the Period 2015–2035.

In Benner's projection 2026 is marked as a "B" phase year — a peak of high prices and euphoria, often the culmination of a bull market before a shift to downturns. Historical "B" peaks have aligned (often within 1-2 years) with major tops like: 1929 (Great Depression peak), 2000 (dot-com bubble), 2007 (pre-2008 crisis), and others. 2026 is the final peak year, and should be followed by underperformance or bearish conditions into 2032.

 

 

Martin Armstrong contends that Benner’s cycle is more a historical curiosity than a reliable predictive tool, noting that it has been both right and wrong many times: 

 

The claim that Benner’s Cycle predicted the Great Depression is false. The chart [above] that was published in the Wall Street Journal altered Samuel Benner’s cycle, which was based on agriculture. It predicted a high in 1927, not 1929, and the low in 1930, not 1932. Claims that Benner’s work calls for a crash in 2025 are flat-out wrong. His target years would be 2019 and 2035, based on his data, not the altered, fake news published by the Wall Street Journal in 1933.

 

Benner was a farmer. Applying his cycle to the economy today is no longer effective, any more than the Kondratieff Wave. Both were based on the economy, with agriculture being the #1 sector. As the Industrial Revolution unfolded, those cycles remain relevant for commodities, but not the economy. Agriculture, when Benner developed his model, accounted for 53% of the economy. Today it is 3%. If they were alive today, they would have used the services industry. Capital flows are still pointing to the dollar, given the prospect of war and sovereign defaults outside the USA.

Martin Armstrong, August 30, 2025.

 

See also: 

TPR (2022) - "Periods When to Make Money" | Benner Cycle Projection into 2023 Major Low. 

The 18 Year Economic Cycle │Akhil Patel

Akhil Patel was the special guest presenter at the Foundation for the Study of Cycles' June 3 'Masters Working Group' interactive session. Author of 'The Secret Wealth Advantage', Patel discusses how the 18 year cycle affects the markets and how it can transform investing strategies. Patel is one of the world’s leading experts in economic, financial, and property cycles. He has been working for over a decade to produce unique research that combines an in- depth understanding of business, real estate, and stock market cycles. 

 

Reference:
Akhil Patel (June 4, 2024) - Significance of the 18-Year Cycle. (video)

 

See also:
The 18.6 Year Real Estate Cycle.  

2024 in W.D. Gann's Financial Time Table.

Cycles Period Tables │ Foundation for the Study of Cycles

The following table of cycle period lengths is taken from the Cycles - Classic Library Collection published by the Foundation for the Study of Cycles. The numbers after the cycle series name and description of the cycle are page references. The period lengths are sometimes stated as a whole number of years, which may mean that the cycle period is not known accurately or that the period was close to a whole number of years. 

 

In some cases periods such as 3.33 years are given which may mean about 3 and 1/3 years which is presumably more accurate than a whole number of years. There seems to be a tendency to use 1/2, 1/3 and 1/6 of years, perhaps because these are whole numbers of months. In that case the accuracy may be about 1 month. In other cases (most notably Dewey’s analysis) the periods are stated with more decimal places and probably does truly reflect the accuracy of the results, e.g. 5.92 or 5.537 years.

 

Cycle Lengths in Hours
Duration	Description; Page Numbers
1 hour and 4 minutes cycle	eruption of Old Faithful geyser; 127
12.5-hour cycle	tides; 80
12.75-hour cycle	tides; 65
24-hour cycle	the day; 80; 264
diurnal cycle	earthquakes; 127
24-hour cycle	light and dark on earth; 65
Cycle Lengths in Days
7-day cycle	aftershock; 284
8-day cycle	aftershock; 284
10-day cycle	aftershock; 284
12-day cycle	aftershock; 284
13.25-16.25-day cycle	stock prices; 740
14-day cycle	aftershock; 284
14.75-day (2.1-week) cycle	stock prices; 741-742
14.8-day (2.-11-week) cycle	earthquakes; 127
14-28-day (2-4 week) cycle	amorousness of women; 281; 283
29.5-day (4.21-week) cycle	births of infants; 278; 281-283
29.6-day (4.23-week) cycle	earthquakes; 127
34 market-day cycle	sugar prices; 21-22
120.166-day (17.14-week) cycle	stock prices; 467-496
387-day (55.29-week) cycle	brightness of T Cephei; 122-123
433-day (61.86-week) cycle	variations of latitude; 732
Cycle Lengths in Weeks
2-week cycle	insect swarms; 10
2-week cycle	stock market; 10
17-week (3.88-month) cycle	stock prices; 270; 402
17-week (3.88-month) cycle	the sun; 402
17-week (3.88-month) cycle	sunspots; 119; 232; 270
17.166-week (3.915-month) cycle	stock prices; (Dow Jones Indus­trial Averages); 467-496
17.166-week (3.915-month) cycle	sunspots; 232-233; 492
Cycle Lengths in Months
3-month (13.04-week) cycle	textile plant sales; 40-44
3.937-month (17.1-week) cycle	stock prices (industrial); 63
4-month (17.39-week) cycle	electric potential of trees; 63
4-month (17.39-week) cycle	stock prices; 467
4.05-month (17.63-week) cycle	sales of Company G; 63
5.9-month (25.65-week) cycle	stock prices (industrial); 63
6-month (26.09-week) cycle	earthquakes; 127
6-month (26.09-week) cycle	electric potential of trees; 63; 280; 309-311
6.33-month (27.52-week) cycle	stock prices; 403
6.33-month (27.52-week) cycle	stock prices (industrial); 521
6.37-month (27.69-week) cycle	stock prices; 521
6.41-month (27.87-week) cycle	stock prices; 403
6.41-month (27.87-week) cycle	stock prices (industrial); 520
7.92-month (34.44-week) cycle	sales of Company G; 63
8.8-month (38.26-week) cycle	sales of Company G; 63
9-month (39.13-week) cycle	bank debits; 63
9.18-month (39.91-week) cycle	ton miles (Canadian Pacific Rail­way); 41-43; 359-361; 372-377
9.2-month (40-week) cycle	stock prices (industrial); 360
9.7-month (42.18-week) cycle	breeding of sooty terns; 278; 286-287
11.9-month (51.74-week) cycle	stock prices (industrial); 63
12-month (52.18-week) cycle	earth around sun; 65
12-month (52.18-week) cycle	earthquakes; 127
12-month (52.18-week) cycle	spring flowers cause; 80
12-month (52.18-week) cycle	temperature of air; 65; 732; 740
12-month (52.18-week) cycle	ton miles (Canadian Pacific Rail­way); 359
12.01-month (1.01-year) cycle	pig iron; 20
12.01-month (1.01-year) cycle	plagues; 20
12.36-month (1.03-year) cycle	temperature; 734
13.3-month (1.11-year) cycle	stock prices (industrial); 63
15.3-month (1.28-year) cycle	stock prices; 465
17.8-month (1.48-year) cycle	stock prices; 63
21-month (1.75-year) cycle	pipe fittings; 47-49; 388-394
23-month (1.92-year) cycle	stock prices; 465
23-month (1.92-year) cycle	textile production; 19-20
23.6-month (1.94-year) cycle	automobile factory sales; 63
23.7-month (1.98-year) cycle	stock prices (industrial); 63
24-month cycle	cotton production; 325
24-month cycle	evening grosbeak; 279
24-month cycle	rayon production; 380
24-month cycle	sweet potato production; 382
24.2-month (2.02-year) cycle	economic activity; 290
30-month (2.5-year) cycle	pipe fittings; 47-49; 388-394
30.29-month (2.524-year) cycle	lake levels; 137; 139
30.66-month (2.555-year) cycle	lake levels; 137; 139
31.04-31.13-month (2.587-2.594-year) cycle	lake levels; 137; 139
32.41-month (2.701-year) cycle	lake levels; 137; 139
32.82-month (2.735-year) cycle	wheat price index; 731; 734
33-month (2.75-year) cycle	automobile factory sales; 360
33-month (2.75-year) cycle	bond prices; 19
33-month (2.75-year) cycle	building activity and construction (residential); 19; 313; 342; 360
33-month (2.75-year) cycle	climate; 360-361
33-month (2.75-year) cycle	consumer goods; 19
33-month (2.75-year) cycle	copper prices; 360
33-month (2.75-year) cycle	General Motors sales; 360
33-month (2.75-year) cycle	pig iron prices; 360
33-month (2.75-year) cycle	prices; 19; 360
33-month (2.75-year) cycle	rayon production; 360; 380
33-month (2.75-year) cycle	retail sales; 19
33-month (2.75-year) cycle	sales of an industrial company; 360
33-month (2.75-year) cycle	ton miles (Canadian Pacific Rail­way); 359-361; 378-379
33-month (2.75-year) cycle	wheat prices; 360
33.46-33.65-month cycle	lake levels; 137; 139
34.86-month (2.905-year) cycle	lake levels; 137; 139
35.6-month (2.97-year) cycle	stock prices; 63
Cycle Lengths in Years
3-year cycle	automobile factory sales; 63
3-year cycle	General Electric sales; 317
3-year cycle	influenza; 20
3-year cycle	pneumonia; 20
3-year cycle	varves; 125
3-3.5-year cycle	business activity; 740
3.006-year (36.072-month) cycle	lake levels; 137; 139
3.02-year (36.2-month) cycle	stock prices; 63
3.13-year (37.56-month) cycle	lake levels; 137; 139
3.25-year (39-month) cycle	commercial paper rates; 500
3.25-year (39-month) cycle	lake levels; 137; 139
3.28-3.29-year (39.36-39.48-month)	lake levels; 137; 139
3.33-year (40-month) cycle	commercial paper rates; 500
3.33-year (40-month) cycle	economic time series (clearings; commodity prices; interest rates); 500
3.33- or 3.42-year (40- or 41-month)	economy; 16
3.34-year (40.08-month) cycle	Like level;; 137; 139
3.39-year (40.7-month) cycle	stock prices (industrial); 497
3.4 year (40.8-month) cycle	pig iron production; 13-16
3.4 year (40.8-month) cycle	variation in solar radiation; 16
3.4 year (40.8-month) cycle	Westinghouse Electric and Manufacturing Co. sales and production; 17
3.42-year (41 month) cycle	bank debits; 505
3.42-year (41 month) cycle	commercial paper rates; 500
3.42-year (41 month) cycle	commodities; 16
3.42-year (41 month) cycle	failures; 588-597
3.42-year (41 month) cycle	pig iron production; 13; 44; 48; 64
3.42-year (41 month) cycle	pipe fittings; 47-49; 388; 394
3.42-year (41 month) cycle	prices; 500
3.42-year (41 month) cycle	production 16; 500
3.42-year (41 month) cycle	sales; 16
3.42-year (41 month) cycle	steel production; 16
3.42-year (41 month) cycle	stock prices; 16
3.42-year (41 month) cycle	stock prices (industrial); 402-403; 497-506
3.46-3.48 year (41.5-41.8-month)	lake levels; 137; 139
3.5-year (42-month) cycle	business; 314; 395-400
3.5-year (42-month) cycle	pig iron production 347
3.5-year (42-month) cycle	rayon production; 380
3.54-year (42.48-month) cycle	war; 638; 640
3.60-3.62-year (43.20-43.44-month)	lake levels; 137; 139
3.67-year (44-month) cycle	pipe fittings; 47-49; 388-394
3.69-year (44.3-month) cycle	pine grosbeak; 751
3.767-year (45.20-month) cycle	weather; 761-762; 764
3.8154-year (45.78-month) cycle	stock prices; 456
3.83-year (46-month) cycle	stock prices; 402; 471; 456-466
3.91-3.92-year (46.92-47.04-month)	lake levels; 137; 139
4-year cycle	cheese consumption; 272; 313; 344 34l
4-year cycle	mice plagues; 10-11
4-year cycle	pine grosbeak; 751
4-year cycle	sunspots; alternate cycles reversed; 272
4.14-year (49.7-month) cycle	lake levels; 137; 139
4.2-year (50.4-month) cycle	love rings; 58
4.2-year (50.4-month) cycle	weather; 58
4.222-year (50.664-month) cycle	deaths in Massachusetts; 757
4.222-year (50.664-month) cycle	temperature; 750-764
4.222-year (50.664-month) cycle	tree rings (Arizona); 752; 757
4.222-year (50.664-month) cycle	varves; 752
4.225-year (50.7-month) cycle	pine grosbeak; 751
4.25-year (51-month) cycle	dates of thawing and freezing of rives; 751
4.25-year (51-month) cycle	river break-up; 752
4.33-year (52-month) cycle	lake levels; 137; 139
4.37-year (52.44 month) cycle	sales of Company G; 63
4.4-year (52.8 month) cycle	stock prices (industrial); 63
4.4-year (52.8 month) cycle	stock prices (railroad); 63
4.41 year (52.92-month) cycle	advertising effectiveness; 63
4.41 year (52.92-month) cycle	temperature; 63
4.41 year (52.92-month) cycle	wheat prices; 63
4.418-year (53.016-month) cycle	wear; 761-762
4.44-year (53.28-month) cycle	pig iron price;; 63
4.50-year (54-month) cycle	lake levels; 137; 139
4.77-year (57.24-month) cycle	lake levels; 137-138
4.8-year (57.6-month) cycle	sunspots; 270
5.0-year cycle	post office revenues; 598; 600
5.0-year cycle	stock price; 411
5.107-year (61.284 month) cycle	international bellies; 692
5.2-year (62.4-month) cycle	ton miles (Canadian Pacific Rail­way) 359; 364-367
5.20-5.28-year (62.40-63.36-month)	lake levels; 137-138
5.289-year (63.468-month) cycle	post office revenues; 598; 600
5.377-year (63.524-month) cycle	international battles; 692
5.445-year (65.340.month) cycle	international battles; 692
5.47-year (6i64-month) cycle	com prices; 569
5.4-5.6-year (64.8-67.2-month)	cotton prices; 315
5.4-5.6-year (64.8-67.2-month)	pig iron prices; 315
5.4-5.6-year (64.8-67.2-month)	sales of manufacturing companies; 315
5.4-5.6-year (64.8-67.2-month)	sunspots; 315
5.4-5.6-year (64.8-67.2-month)	weather; 315
5.5-year (66-month) cycle	advertising effectiveness; 74
5.5-year (66-month) cycle	airplane traffic; 74; 312; 315
5.5-year (66-month) cycle	bank debits; 74
5.5-year (66-month) cycle	business activity; general; 74
5.5-year (66-month) cycle	business recessions; 74
5.5-year (66-month) cycle	cement stocks; 74
5.5-year (66-month) cycle	coal (bituminous) prices; 74
5.5-year (66-month) cycle	cocoa bean prices; 74
5.5-year (66-month) cycle	commercial crises; 74
5.5-year (66-month) cycle	com prices; 74; 315; 382; 527; 528; 565-574; 741
5.5-year (66-month) cycle	coin production; 74
5.5-year (66-month) cycle	cotton prices; 74
5.5-year (66-month) cycle	Dow Chemical Co. plant expansions; 74
5.5-year (66-month) cycle	economic affairs; 73
5.5-year (66-month) cycle	hog prices; 74
5.5-year (66-month) cycle	international battles; 693
5.5-year (66-month) cycle	manufacturing production; 74
5.5-year (66-month) cycle	prices; 74; 315; 382; 527-528; 565; 574; 741
5.5-year (66-month) cycle	purchasing power of hogs; 74
5.5-year (66-month) cycle	pig iron prices; 74
5.5-year (66-month) cycle	stock prices; 315
5.5-year (66-month) cycle	stock prices (industrial); 74
5.5-year (66-month) cycle	stock prices (railroad); 74
5.5-year (66-month) cycle	the sun; 74
5.5-year (66-month) cycle	wheat prices; 74
5.5-year (66-month) cycle	wildlife abundance; 74
5.537-year (66.444-month) cycle	post office revenues; 598; 600
5.57-year (66.84-month) cycle	cotton prices; 569
5.575-year (66.9 month) cycle	cotton prices; 558
5.6 year (67.2-month) cycle	sunspots; 270
5.6 year (67.2-month) cycle	sweet potato production; 314; 382-384
5.6 year (67.2-month) cycle	wheat prices; 314; 358
5.6 year (67.2-month) cycle	wheat production; 314; 358
5.602-year (67.224-month) cycle	international battles; 692
5.61-yea; (67.3-month) cycle	coin prices; 571
5.62-year (67.5-month) cycle	corn prices; 741
5.625-year (67.5 month) cycle	sunspots; 231; 270
5.692-year (68.304-month) cycle	international battles; 692
5.737-year (68.844-month) cycle	international war; 692
5.790-year (69.48-month) cycle	post office revenues; 598; 600
5.887-year (70.644-month) cycle	sunspots alternate cycles reversed; 75
5.89-year (70.68-month) cycle	sunspots; 7475; 119; 227-231
5.9-year; (70.8-month) cycle	business activity; general; 74
5.9-year; (70.8-month) cycle	business failure;; 63; 74-75; 588; 590-597
5.9-year; (70.8-month) cycle	coal stock price; 74
5.9-year; (70.8-month) cycle	copper prices; 74
5.9-year; (70.8-month) cycle	copper share prices; 74
5.9-year; (70.8-month) cycle	cotton prices; 73-74
5.9-year; (70.8-month) cycle	gasoline; 73
5.9-year; (70.8-month) cycle	grouse; 73; 75
5.9-year; (70.8-month) cycle	interest rates; long term; 74
5.9-year; (70.8-month) cycle	knit underwear; 75
5.9-year; (70.8-month) cycle	pig iron prices; 74; 590
5.9-year; (70.8-month) cycle	prices; 73-74
5.9-year; (70.8-month) cycle	stock prices (combined); 74
5.9-year; (70.8-month) cycle	stock price (industrial); 74
5.9-year; (70.8-month) cycle	stock prices (railroad); 63; 74; 590
5.9-year; (70.8-month) cycle	sunspots; alternate cycles reversed; 73
5.9-year; (70.8-month) cycle	war; 640
5.9-year; (70.8-month) cycle	wheat prices; 73
5.91-year (70.9 month) cycle	business failure liabilities; 227
5.91-year (70.9 month) cycle	coal stock prices; 75
5.91-year (70.9 month) cycle	copper prices; 63; 75; 227
5.91-year (70.9 month) cycle	copper share prices; 75
5.91-year (70.9 month) cycle	cotton prices; 63; 75; 227; 528; 558-564; 591
5.91-year (70.9 month) cycle	economic affairs; 73
5.91-year (70.9 month) cycle	pig iron prices; 63; 75; 227
5.91-year (70.9 month) cycle	stock prices (combined); 75; 227; 513
5.91-year (70.9 month) cycle	stock prices (industrial); 227
5.91-year (70.9 month) cycle	stock prices (railroad); 227
5.91-year (70.9 month) cycle	sunspots; 590
5.91-year (70.9 month) cycle	sunspots; alternate cycles reversed; 63; 558
5.91-year (70.9 month) cycle	tree ring widths; 63; 558
5.91 or 5.92-year (70.9 or 71-month)	economic series; 74
5.91 or 5.92-year (70.9 or 71-month)	stock prices; 403; 513-5t8
5.92-year (71-month) cycle	business activity; 75
5.92-year (71-month) cycle	interest rates; long term; 76
5.92-year (71-month) cycle	knit underwear; 75
5.92-year (71-month) cycle	stock prices (railroad); 75; 513; 516-518
5.93-year (71.16-month) cycle	stock prices (industrial); 63
5.93-year (71.16-month) cycle	wheat prices; 76
5.96-year (71.52-month) cycle	wheat prices; 63
5.98-6.01-year (71.76-72.12-month)	lake levels; 137-138
5.98-6.02-year (71.76-72.24-month)	stock prices; 455
5.982-year (71.782-month) cycle	international battles; 693
5.994-year (71.928-month) cycle	international battles; 691-692
6-year cycle	advertising effectiveness; 76
6-year cycle	Allis-Chalmers Manufacturing Co. sales; 76
6-year cycle	American Viscose Corp. shipments; 76
6-year cycle	Armco Steel Corp. sales; 68; 76
6-year cycle	Armour & Co. sales; 76
6-year cycle	Bethlehem Steel Corp. production; 76
6-year cycle	business activity; 76
6-year cycle	climate; 325
6-year cycle	Continental Oil Co. income; 76
6-year cycle	cotton prices; 325
6-year cycle	cotton production; 76; 313; 322­; 326
6-year cycle	diphtheria; 76
6-year cycle	I.E. du Pont de Nemours & Co.; sales; 76
6-year cycle	economic data; 73
6-year cycle	General Electric orders received; 76; 313; 316-321
6-year cycle	General Electric sales; 76
6-year cycle	B.F. Goodrich Co. sales; 76
6-year cycle	Goodyear Tire & Rubber sales; 76
6-year cycle	heavy hog prices; 76
6-year cycle	Inland Steel Co. sales; 76
6-year cycle	international crises; 76
6-year cycle	iron production; 76
6-year cycle	Jones and Laughlin Steel Corp. sales; 76
6-year cycle	lard prices; 76
6-year cycle	Monsanto Chemical Co. sales; 76
6-year cycle	Montgomery Ward and Co. sales; 76
6-year cycle	National Lead Co. sales; 76
6-year cycle	Pittsburgh Plate Glass Co. sales; 76
6-year cycle	prices; 76-77; 325
6-year cycle	Procter and Gamble Co. sales; 76
6-year cycle	production; 76; 313; 316; 322-332; 380
6-year cycle	rainfall; 76
6-year cycle	rayon production; 76; 380
6-year cycle	Republic Steel Corp. production; 76
6-year cycle	rice prices; 76
6-year cycle	rock strata thickness; 317
6-year cycle	sales of American industry; 68; 76­77; 316
6-year cycle	Seaboard Air Line operating revenue; 76
6-year cycle	Sears; Roebuck and Co. sales; 76
6-year cycle	Standard Oil Co. of California in­come; 76
6-year cycle	Stockham Valves and Fittings (Com­pany G); 76
6-year cycle	steel production; 76; 313; 327-332
6-year cycle	sugar prices; 77
6-year cycle	solar activity; 325
6-year cycle	stock prices; 77; 411
6-year cycle	stock prices (industrial); 76
6-year cycle	sunspot numbers; alternate cycles reversed; 77; 317
6-year cycle	Swift & Co. sales; 77
6-year cycle	tree rings; 317; 325
6-year cycle	U.S. Rubber Co. sales; 77
6-year cycle	U.S. Steel Corp. stock earnings; 77
6-year cycle	U.S. Steel Corp. stock prices; 77
6-year cycle	Wilson & Co. sales; 77
6-year cycle	varve thickness; 77; 125
6-year cycle	weather; 77
6-year cycle	wholesale commodity prices; 77
6-year cycle	Youngstown Sheet & Tube Co. sales; 77
6.01-year cycle	stock prices; 402; 453-455
6.03-year cycle	economic data; 73
6.07-year cycle	stock prices; 513
6.1-year cycle	cigarette stock prices; 77
6.1-year cycle	cotton prices; 77; 558
6.1-year cycle	economic affairs; 73
6.1-year cycle	flood stages; Nile River; 77
6.1-year cycle	pig iron prices; 74; 77
6.1-year cycle	post office revenues; 598; 600
6.1-year cycle	stock prices (industrial); 74; 77
6.1-year cycle	stock prices (rail); 74; 77
6.1-year cycle	sunspot numbers; alternate cycles reversed; 77
6.1-year cycle	tree rings; 77
6.1-year cycle	weather; 77
6.1- or 6.2-year cycle	flood stages; Nile River; 74
6.1- or 6.2-year cycle	sunspot numbers; 74
6.2-year cycle	cigarette stock prices; 74
6.2-year cycle	failures; 591
6.2-year cycle	interest rates (short term); 74
6.2-year cycle	post office revenue; 598; 600
6.2-year cycle	production (industrial); 74
6.2-year cycle	stock prices; 513
6.2-year cycle	war; 692
6.2-year cycle	weather; 74
6.4-year cycle	aluminum production; 313; 333­; 337
6.4-year cycle	cotton prices; 336
6.4-year cycle	failures; 336
6.4-year cycle	General Motors sales of passenger cars and trucks; 336
6.4-year cycle	kill of grouse; 336-337
6.4-year cycle	pig iron prices; 336
6.4-year cycle	stock prices (rail); 336
6.4-year cycle	tree-ring widths; 336
6.45-year cycle	aluminum production; 74
6.45-year cycle	bank discount rates; 74
6.45-year cycle	business activity; 74
6.45-year cycle	business failures; 74
6.45-year cycle	cotton prices; 74; 558; 591
6.45-year cycle	department store sales; 74
6.45-year cycle	economic affairs; 73
6.45-year cycle	pig iron prices; 74
6.45-year cycle	pig iron production; 74
6.45-year cycle	stock prices (rail); 74
6.5-year cycle	failures; 591-597
6.5-year cycle	lake levels; 137-138
6.524-year cycle	international battles; 691-692
6.58-year cycle	lake levels; 137-138
6.680-year cycle	post office revenues; 598; 600
6.93-year cycle	lake levels; 137-138
6.994-year cycle	international battles; 692
7.3-year cycle	sunspots; 270
7.304-year cycle	international battles; 692
7.333-year cycle	post office revenues; 598; 600
7.5-year cycle	public utility company sales; 27-29
7.5-year cycle	ton miles (Canadian Pacific Railway); 314; 359; 364-367
7.59-year cycle	lake levels; 137-138
7.6-year cycle	barometric pressure; 124-125
7.6-year cycle	sunspots; 270
7.670-year cycle	international battles; 692
7.0-year cycle	stock prices; 411
7.7-year cycle	stock prices; 411
7.80-year cycle	stock prices (railroad); 507
7.895-year cycle	post office revenues; 598; 600
7.94-year cycle	stock prices (railroad); 403; 507­; 512; 514-518
7.95-year cycle	stock prices (railroad); 507
8-year cycle	cigarette production; 56-57; 313; 338-339
8-year cycle	crop yields; 56-57
8-year cycle	eggs; purchasing power of; 56-57
8-year cycle	Goodyear Tire and Rubber Com­pany sales; 56-58
8-year cycle	lynx abundance; 56-58
8-year cycle	pig iron prices; 56-58
8-year cycle	rainfall; 56-57
8-year cycle	sales of Company G; 56-57
8-year cycle	steel ingot production; 56-57
8-year cycle	stock prices (railroad); 56-57
8-year cycle	sunspots; alternate cycles reversed; 56-57
8-year cycle	war; 692
8-year cycle	wholesale prices; 56-57
8- or 10-year cycle	lynx abundance; 83
8.1-year cycle	sunspots; 270
8.1667-year cycle	stock prices (combined); 507
8.1667-year cycle	stock prices (rail); 507
8.199-year cycle	international battles; 692
8.2-year cycle	stock prices; 411; 428-429
8.3-year cycle	patents issued; 91; 615-619
8.33-year cycle	stock prices (railroad); 507
8.36-year cycle	sunspots; 270
8.39-year cycle	stock prices; 514-518
8.39-year cycle	stock prices (railroad); 403; 507­; 512
8.39-year cycle	war; 692
8.39-8.46-year cycle	lake levels; 137-138
8.4-year cycle	sunspots; 270
8.5-year cycle	copper prices; 519
8.5-year cycle	pig iron prices; 91; 519; 527
8.5-year cycle	stock prices; 403; 519
8.5-year cycle	sunspots; 270
8.53-year cycle	pig iron prices; 533-543
8.594-year cycle	international battles; 692
8.60-year cycle	copper prices; 93
8.684-year cycle	post office revenues; 598; 600
8.7-year cycle	sunspots; 270
8.76-year cycle	sunspots; 63; 270
8.771-year cycle	international battles; 692
8.8-year cycle	international and civil war battles (war); 72; 633-637; 639
8.8-year cycle	sunspots; 63; 270
8.85-year cycle	tree-ring widths; 63
8.9-year cycle	pig iron prices; 63
8.94-year cycle	sunspots; 63; 270
8.95-year cycle	lead production; 100
8.96-year cycle	death rates; 100
8.97-year cycle	gold production; 100
8.98-year cycle	deposits of all banks; 100
9-year cycle	Bank of France discounts; 100
9-year cycle	birth; marriage; and death-rates; 100
9-year cycle	business activity; 100
9-year cycle	capital exports; 100
9-year cycle	capital goods of heavy industry; 103
9-year cycle	church membership; 85; 101; 601; 603-608
9-year cycle	commercial crises; 100
9-year cycle	Congregational Church new members; 101
9-year cycle	cotton acreage; 86
9-year cycle	cotton prices; 101
9-year cycle	grasshoppers; 279
9-year cycle	industrial ordinary shares; 101
9-year cycle	lynx abundance; 96; 101
9-year cycle	Methodist Church new members; 101
9-year cycle	pig iron; 347
9-year cycle	pig iron prices; 47; 83
9-year cycle	Presbyterian Church new members; 85; 101
9-year cycle	production; 100
9-year cycle	sales figures; 84
9-year cycle	sales of Company B; 101
9-year cycle	sheep prices; 101
9-year cycle	stock prices; 22-24; 84
9-year cycle	ton miles (Canadian Pacific Rail­way); 101
9-year cycle	venereal disease; 101; 291
9-year cycle	wholesale prices; 22-23; 84
9-year cycle	woodcock abundance; 101
9-10-year cycle	bank discounts; 83
9-10-year cycle	births; deaths; and marriages; 83
9-10-year cycle	commercial crises; 83
9.01-year cycle	barley for grain acreage; 101
9.01-year cycle	barley for grain production; 102
9.01-year cycle	cattle; 102
9.01-year cycle	cotton acreage harvested; 102
9.01-year cycle	cows kept for milk; 102
9.01-year cycle	Irish potato production; 101
9.01-year cycle	rye acreage harvested; 101
9.01-year cycle	rye production; 101
9.02-year cycle	pig iron shipments; 102
9.04-year cycle	life insurance sales; 102
9.05-year cycle	coal (anthracite) production; 102
9.05-year cycle	wholesale sugar prices; 102
9.1-year cycle	corn acreage harvested; 102
9.1-year cycle	solar constant values; 360
9.1-year cycle	sunspot numbers; alternate cycles reversed; 86
9.1-year cycle	tree rings; 102; 434
9.11-year cycle	sunspot numbers; alternate cycles reversed; 102
9.13-year cycle	coal (bituminous) production; 102
9.13-year cycle	steel ingots and steel for castings; 102
9.14-year cycle	crude petroleum production; 102
9.17-year cycle	patents issued; 90; 93; 103; 615­; 619
9.1781-year cycle	stock prices; 442
9.18-year cycle	stock prices (combined ); 90;
9.18-year cycle	stock prices (industrial); 90; 103
9.18-year cycle	stock prices (rail); 90; 103; 507­; 509; 512; 514-518
9.18-year cycle	ton miles (Canadian Pacific Rail­way); 314
9.2-year cycle	British consol prices; 103
9.2-year cycle	copper prices; 291
9.2-year cycle	cows on farms; 431; 434
9.2-year cycle	crops; 104
9.2-year cycle	electric potential gradient; 103
9.2-year cycle	failures; 90; 103; 291; 431; 434; 586-597
9.2-year cycle	grasshoppers; 90; 92; 103; 279; 401; 431; 434
9.2-year cycle	lake levels; 103; 137-138
9.2-year cycle	partridge abundance; 103
9.2-year cycle	patents issued; 90; 93
9.2-year cycle	pig iron prices; 47; 82; 86; 90-91; 103; 291; 431; 434; 527; 533-543
9.2-year cycle	stock market behavior; 504; 506
9.2-year cycle	stock prices; 50-5 1; 84; 401; 421­; 435; 446-448; 522; 525-526
9.2-year cycle	stock prices (combined); 89-90
9.2-year cycle	stock prices (industrial); 291
9.2-year cycle	stock prices (railroad); 291
9.2-year cycle	sunspot numbers; 291-292
9.2-year cycle	tree rings (growth); 88-89; 103­; 104; 291-292; 434
9.2-year cycle	varves; 103
9.2-year cycle	wholesale prices; 84; 88-89; 103
9.225-year cycle	stock prices; 447; 450; 453-455
9.225-year cycle	stock prices (combined); 90; 104; 431; 434
9.231-year cycle	bond yields; 104
9.25-year cycle	automobile sales; 104
9.25-year cycle	copper share prices; 104
9.25-year cycle	Lewes River early closing; 104
9.25-year cycle	Lewes River closed days; 104
9.25-year cycle	volcanic eruptions; 127
9.26-year cycle	cattle on farms; 431; 434
9.26-year cycle	lead (pig) prices; 104
9.270-year cycle	post office revenues; 598; 600
9.28-year cycle	copper prices; 82; 86; 93; 104; 431; 434
9.2- or 9.3-year cycle	grasshoppers; 86
9.2- or 9.3-year cycle	sunspot numbers; 86
9.3-year cycle	climatic variations; 104
9.3-year cycle	production of manufacturing; 104; 431; 434
9.3-year cycle	sales of a manufacturing company; 93
9.3-year cycle	sea currents; 104
9.3-year cycle	sunspot numbers; 104; 270; 431; 434
9.3-year cycle	wheat prices; 292; 431; 434
9.305-year cycle	tides; 104
9.31-year cycle	wheat prices; 104
9.33-year cycle	sales of a manufacturing company; 104; 431; 434
9.33-year cycle	wholesale price index; all commodities; 104
9.34-year cycle	silver mine production; 104
9.37-year cycle	sweet potato acreage harvested; 105
9.4-year cycle	tree-ring width; 105
9.4-year cycle	varves; 105
9.41-year cycle	sugar prices; 105
9.44-year cycle	cotton production; 105
9.46-year cycle	cheese consumption; 105
9.47-year cycle	cotton prices; 105
9.48-year cycle	sheep value; 105
9.4- or 9.5-year cycle	cotton production; 94
9.4- or 9.5-year cycle	rainfall; 94
9.4- or 9.5-year cycle	weather; 94
9.5-year cycle	barometric pressure; 105
9.5-year cycle	climate; 105
9.5-year cycle	floods; Nile; 105
9.5-year cycle	moon variation; 96
9.5-year cycle	rainfall; 105
9.5-year cycle	wholesale prices; 84
9.53-year cycle	tree ring growth; 105
9.54-year cycle	barometric pressure; 105
9.554-year cycle	international battles; 692
9.58-year cycle	wheat production; 95; 106
9.5986-year cycle	international battles; 106; 693
9.6- (9 2/3-) year cycle	barometric pressure; 55
9.6- (9 2/3-) year cycle	biological phenomena; 279; 314
9.6- (9 2/3-) year cycle	caterpillar (tent) abundance; 53; 55; 107
9.6- (9 2/3-) year cycle	chinch bug abundance; 53; 55; 96; 106; 288
9.6- (9 2/3-) year cycle	coyote abundance; 53; 55; 107
9.6- (9 2/3-) year cycle	egg abundance of hawk owl; 106
9.6- (9 2/3-) year cycle	financial crises in Great Britain; 53; 83; 95; 106
9.6- (9 2/3-) year cycle	fisher abundance; 53
9.6- (9 2/3-) year cycle	grouse abundance; 53
9.6- (9 2/3-) year cycle	hawk abundance; 53; 106
9.6- (9 2/3-) year cycle	human heart disease; 53; 55; 107
9.6- (9 2/3-) year cycle	international battles; 53; 55; 97; 602; 627; 739
9.6- (9 2/3-) year cycle	lynx abundance; 40-41; 53; 55; 58; 96; 106; 278-279; 288-289
9.6- (9 2/3-) year cycle	mammals; 288
9.6- (9 2/3-) year cycle	marten abundance; 53; 55; 107
9.6- (9 2/3-) year cycle	mink abundance; 53; 55; 107
9.6- (9 2/3-) year cycle	muskrat abundance; 53; 55; 107
9.6- (9 2/3-) year cycle	owl abundance; 53; 106
9.6- (9 2/3-) year cycle	ozone content; 53; 55; 107
9.6- (9 2/3-) year cycle	partridge abundance; 53; 106
9.6- (9 2/3-) year cycle	precipitation; 53; 55
9.6- (9 2/3-) year cycle	rabbit abundance; 53; 55
9.6- (9 2/3-) year cycle	rainfall; 55; 124; 126
9.6- (9 2/3-) year cycle	river run-off; 53; 55; 107
9.6- (9 2/3-) year cycle	salmon; 288
9.6- (9 2/3-) year cycle	salmon abundance; 53; 55; 84; 106
9.6- (9 2/3-) year cycle	salmon catches; 53
9.6- (9 2/3-) year cycle	snowshoe rabbit abundance; 106
9.6- (9 2/3-) year cycle	storm track shifts; 53; 106
9.6- (9 2/3-) year cycle	tick abundance; 53; 106
9.6- (9 2/3-) year cycle	trade peaks in Great Britain; 83
9.6- (9 2/3-) year cycle	tree-ring widths; 53; 55; 106; 288
9.6- (9 2/3-) year cycle	tularemia; 53; 106
9.6- (9 2/3-) year cycle	U-magnetic value; 53; 55; 106
9.6- (9 2/3-) year cycle	varves; 107
9.6- (9 2/3-) year cycle	varying hare; 288
9.6- (9 2/3-) year cycle	war; 53; 55; 97; 602; 627; 717-­724; 739
9.6- (9 2/3-) year cycle	weather; 288
9.6- (9 2/3-) year cycle	wheat acreage; 53; 55; 314; 385-387
9.6- (9 2/3-) year cycle	wheat acreage harvested; 95-96; 106
9.6- (9 2/3-) year cycle	wheat acreage planted; 95; 106
9.6- (9 2/3-) year cycle	wheat prices; 55
9.6- (9 2/3-) year cycle	wildlife; 53; 84
9.65-year cycle	cotton prices; 53; 95; 107
9.7-year cycle	barometric pressure; 107
9.7-year cycle	colored fox abundance; 107
9.7-year cycle	cross fox abundance; 107
9.7-year cycle	fisher abundance; 107
9.7-year cycle	goshawk abundance; 107
9.7-year cycle	Peace River opening dates; 107
9.7-year cycle	silver fox abundance; 107
9.7-year cycle	skunk abundance; 107
9.7-year cycle	red fox abundance; 107
9.7-year cycle	sunspot numbers; alternate cycles reversed; 96
9.7-year cycle	timber wolf abundance; 107
9.708-year cycle	sunspot numbers; alternate cycles reversed; 107
9.75- (9 3/4-) year cycle	lynx abundance; 8-9; 27
9.75- (9 3/4-) year cycle	salmon population; 11
9.75- (9 3/4-) year cycle	wheat prices; 83; 108
9.77-year cycle	temperature; 108
9.78-year cycle	cigarette production; 108
9.78-year cycle	sweet potato production; 108
9.79-year cycle	wholesale prices; 108
9.86-year cycle	precipitation; 108
9.9-year cycle	bank deposits; 109
9.9-year cycle	copper mine products; 109
9.9-year cycle	cotton prices; 109
9.9-year cycle	lynx abundance; 96; 109
9.9-year cycle	prairie chicken abundance; 109
9.9-year cycle	precipitation; 109
9.9-year cycle	post office revenues; 109
9.9-year cycle	ruffed grouse; 109
9.9-year cycle	sunspot numbers; 98; 109; 270
9.9-year cycle	varves; 108
9.9-year cycle	waxwing abundance; 109
9.91-year cycle	cotton prices; 108
9.91-year cycle	lynx abundance; 108
9.93-year cycle	prairie chicken abundance; 108
9.93-year cycle	ruffed grouse abundance; 108
9.93-year cycle	sunspot numbers; 98-99; 108; 270
9.93-year cycle	tree rings; 108
9.93-year cycle	varves; 108
9.93-year cycle	waxwing abundance; 108
9.94-year cycle	post office revenues; 108
10-year cycle	bank deposits; 108
10-year cycle	caterpillars; 37
10-year cycle	copper mines production; 108
10-year cycle	ozone; 37
10-year cycle	rabbit abundance; 37
10-year cycle	rainfall; 37
10-year cycle	salmon (Atlantic); 37
10-year cycle	sunspots; 270
10- or 11-year cycle	caterpillar (tent) abundance; 10
10-12-year cycle	wheat and barley bumper crops; 266
10.239-year cycle	international battles; 692
10.3-year cycle	stock prices; 411; 428; 429
10.3876-year cycle	stock prices; 442
10.444-year cycle	commercial crises; 268
10.45-year cycle	sunspots; 268
10.59-year cycle	sunspots; 213; 270
10.8-year cycle	stock prices (industrial); 266
10.8- to 11.4-year cycles	sunspots; 265-275
10.81-year cycle	lead production; 266
10.83-year cycle	stock prices (combined); 266
10.92-year cycle	Reichbank clearings; 266
10.93-year cycle	wheat prices; 266-267
10.94-year cycle	earthquakes; 126
10.96-year cycle	earthquakes; 129
10.98-year cycle	cotton prices; 266
10.99-year cycle	corn acreage harvested; 266
10.99-year cycle	sheep value; 266
11-year cycle	automobile production; 266
11-year cycle	business activity; 266
11-year cycle	commercial crises; 267
11-year cycle	corn prices; 565
11-year cycle	cotton prices; 266-267
11-year cycle	crop yields; 266
11-year cycle	earthquakes; 117-118; 129-130
11-year cycle	famine and drought; 267
11-year cycle	lake levels; 139
11-year cycle	laxative sales; 267
11-year cycle	post office revenues; 266; 598; 600
11-year cycle	sunspot numbers; 118; 196-198; 217-218; 224; 232; 237; 251; 741
11-year cycle	trade and speculation; 268
11-year cycle	tree rings; 125
11-year cycle	U.S. Steel Corp. earnings; 266
11-year cycle	varves; 125
11-year cycle	wheat prices; 266
11-year cycle	wheat yields; 266
11.094-year cycle	sunspot numbers; 196; 213
11.1-year cycle	bank deposits; 266
11.1-year cycle	mass human excitability; 268; 272­; 273
11.1-year cycle	pig iron prices; 266
11.1-year cycle	sunspot maxima; 196-198
11.1-year cycle	sunspots; 201; 206; 215; 221-222
11.11-year cycle	grain prices; 266; 270
11.11-year cycle	mass human excitability; 267; 272
11.11-year cycle	sunspots; 96; 117; 121; 241; 246; 254-259; 261; 264-275
11.11-year cycle	wrought iron prices; 113
11.13-year cycle	sunspots; 270
11.14-year cycle	business activity; 266
11.142- (11 1/7)-year cycle	war; 267
11.15-year cycle	sunspots; 273
11.17-year cycle	sunspots; 270
11.19-year cycle	crude petroleum production; 267
11+ (SS-length) cycle	business activity; 266
11+ (SS-length) cycle	corn production; 266
11+ (SS-length) cycle	economic prosperity and inter­national crises; 267
11+ (SS-length) cycle	field pea production; 266
11+ (SS-length) cycle	fisheries; value of; 267
11+ (SS-length) cycle	grain prices; 266
11+ (SS-length) cycle	grain production; 266
11+ (SS-length) cycle	human reactions in wars; 627
11+ (SS-length) cycle	military and political activity; 627
11+ (SS-length) cycle	loans for residential mortgages; 266
11+ (SS-length) cycle	marriage rates; 267
11+ (SS-length) cycle	mineral physical production; 267; 272
11+ (SS-length) cycle	panics in business; 267
11+ (SS-length) cycle	shipwrecks; 267
11+ (SS-length) cycle	stock prices; 266
11+ (SS-length) cycle	sunspot numbers; 23
11+ (SS-length) cycle	terrestrial magnetism; 23-24
11+ (SS-length) cycle	tree-ring variation; 25
11+ (SS-length) cycle	wheat prices; 266
11+ (SS-length) cycle	wholesale commodity prices; 266
11.2-year cycle	manufacturing physical production; 267; 272
11.2-year cycle	pig iron production; 267
11.2-year cycle	war; 267; 627; 695; 708-709; 717
11.204-year cycle	war; 691-693
11.241-year cycle	international battles; 267; 693
11.245-year cycle	international wars; 627; 717
11.25-year cycle	sunspots; 270
11.25-year cycle	tree rings; 302
11.30-year cycle	wholesale commodity prices; 266
11.37-year cycle	sunspots; 270
11.38-year cycle	cotton production; 266
11.4-year cycle	sunspots; 270
11.43-year cycle	lake levels; 137-138
11.4530-year cycle	stock prices; 442
11.6-year cycle	stock prices; 411
11.73-year cycle	sunspots; 213-215
12.1-year cycle	international battles; 627
12.159-year cycle	international battles; 692
12.3-year cycle	international battles; 602; 627; 717-­724
12.34-year cycle	international battles; 739
12.3456-year cycle	international battles; 693
12.35-year cycle	international battle index; 97
12.406-year cycle	post office revenues; 598; 600
12.8-year cycle	stock prices; 411
12.9-year cycle	sunspots; 270
13.0-year cycle	sunspots; 270
13.210-year cycle	international battles; 692
13.5-year cycle	sunspots; 270
13.6735-year cycle	stock prices; 442
13.51-13.68-year cycle	lake levels; 137-138
14- to 17-year cycle	Vesuvius; 127
14.172-year cycle	international battles; 692
14.732-year cycle	post office revenues; 598; 600
14.8-year cycle	purchasing power of beef cattle; 12
15-year cycle	grasshopper abundance; 292
15.507-year cycle	international battles; 692
15.5814-year cycle	stock prices; 442
16.67- (16 2/3)-year cycle	coffee prices; 112-113; 280
16.67- (16 2/3)-year cycle	floods; Nile River; 72; 112-113; 280
16.67- (16 2/3)-year cycle	iron prices; 72
16.67- (16 2/3)-year cycle	population; 344
16.67- (16 2/3)-year cycle	tree rings; 72; 112-113; 279-280; 298
16.67- (16 2/3)-year cycle	wrought iron prices; 46-47; 68; 70; 72; 112-113; 280; 298; 738-739
17-year cycle	building permits; 167
17-year cycle	building construction; 167
17-year cycle	cicada; 167
17-year cycle	cattle prices; 167
17-year cycle	cattle supply and demand; 167
17-year cycle	cigarette stock prices; 167
17-year cycle	poultry product prices; 167
17-year cycle	precipitation; 166-169
17-year cycle	rainfall; 167
17-year cycle	solar constant; 167
17-year cycle	sunspot numbers (reversing); 167
17-year cycle	temperature; 166-169
17-year cycle	weather; 167; 351
17-year cycle	wheat prices; 351
17-18-year cycle	building transport; 167
17-18-year cycle	deeds recorded; 167
17-18-year cycle	real estate activity; 167
17.05-year cycle	interest rates; 167
17.16 (17 1/6)-year cycle	permits per capita; 167
17.2-year cycle	population; 166-169; 620
17.2-year cycle	stock prices; 166-169
17.2-year cycle	tree rings; 298
17.25-year cycle	cotton prices; 166-169
17.3-year cycle	flood stages; Nile River; 58
17.323-year cycle	varves; 44-45; 47; 141-171
17.328-year cycle	varves; 156
17.33- (17 1/3)-year cycle	commodity prices; 167
17.33- (17 1/3)-year cycle	cotton prices; 72; 351
17.33- (17 1/3)-year cycle	floods; Nile River; 72; 113
17.33- (17 1/3)-year cycle	historical change; 167
17.33- (17 1/3)-year cycle	lake levels; 167
17.33- (17 1/3)-year cycle	population; 72
17.33- (17 1/3)-year cycle	precipitation; 72
17.33- (17 1/3)-year cycle	stock prices; 72
17.33- (17 1/3)-year cycle	stock prices (industrial); 167
17.33- (17 1/3)-year cycle	sunspots; alternate cycles reversed; 72; 166-169
17.33- (17 1/3)-year cycle	temperature; 72
17.33- (17 1/3)-year cycle	varves; 54; 58; 72; 118; 140-171
17.33- (17 1/3)-year cycle	war; 602
17.33- (17 1/3)-year cycle	wheat prices; 72; 166-169
17.37-year cycle	flood stages; Nile River; 142; 161; 166-169
17.398-year cycle	international battles; 691-692
17.66-year cycle	earthquakes; 63
17.66-year cycle	sunspots; alternate cycles reversed; 63
17.67- (17 2/3 )-year cycle	earthquakes; 648-650
17.67- (17 2/3 )-year cycle	failures; 544-545; 648-650
17.67- (17 2/3 )-year cycle	sunspots; alternate cycles reversed; 648
17.69-year cycle	pig iron prices; 63
17.7-year cycle	coal (bituminous) production; 72
17.7-year cycle	cotton prices; 72
17.7-year cycle	earthquakes; 72
17.7-year cycle	failures; 72
17.7-year cycle	panics; 72
17.7-year cycle	pig iron prices; 72
17.7-year cycle	temperature; 72
17.7-year cycle	tree rings; 72
17.7-year cycle	war battles; 72; 601-602; 621-686; 691
17.71-year cycle	war; 648-650; 693
17.724-year cycle	variable star Scorpius V 381; 63; 648
17.728-year cycle	war; 627
17.73-year cycle	war; 63
17.75- (17 3/4)-year cycle	building permits; 648
17.75- (17 3/4)-year cycle	coal (bituminous) production; 648­; 650
17.75- (17 3/4)-year cycle	cotton prices; 63; 280; 527; 554-557; 581; 611; 648-650
17.75- (17 3/4)-year cycle	failures; 63; 350; 352-353; 529; 581-597; 611
17.75- (17 3/4)-year cycle	international battles; 611
17.75- (17 3/4)-year cycle	mail-order house; 63
17.75- (17 3/4)-year cycle	panics; 581
17.75- (17 3/4)-year cycle	pig iron prices; 280; 350-353; 527; 544-553; 581; 611; 648-650
17.75- (17 3/4)-year cycle	stock prices; 611; 648
17.75- (17 3/4)-year cycle	stock prices (industrial); 351; 581
17.75- (17 3/4)-year cycle	sunspots; alternate cycles reversed; 581
17.75- (17 3/4)-year cycle	tree rings; 63; 113; 280; 308; 351; 354; 544-545; 581; 648-650
17.75- (17 3/4)-year cycle	war; 280; 627
17.78-year cycle	stocks (industrial); 63
17.8-year cycle	stock prices (industrial); 648
17.83- (17 5/6)- year cycle	subdivision activity; 611; 648
17.9-year cycle	building activity; 611; 648
17.92-year cycle	sunspot numbers; alternate cycles reversed; 251-253
17.93- or 17.94-year cycle	sunspot numbers; alternate cycles reversed; 254
18-year cycle	bank credit; 648
18-year cycle	bricks; 444; 648
18-year cycle	building activity; 611
18-year cycle	building construction; 648
18-year cycle	building materials; 444; 648
18-year cycle	building permits; 444; 648
18-year cycle	coal consumption and production; 444
18-year cycle	fir timber imported; 444; 648
18-year cycle	furniture; 347
18-year cycle	loans and discounts; 347-349
18-year cycle	lumber production; 347
18-year cycle	lynx abundance; 27
18-year cycle	panics; 443-444; 648-650
18-year cycle	pig iron consumption and production; 444
18-year cycle	purchasing power; 648
18-year cycle	railroad expenditures; 648
18-year cycle	railroad freight revenue; 648
18-year cycle	railroad receivership; 648
18-year cycle	real estate activity; 611; 648
18-year cycle	sheet glass retained; 444; 648
18-year cycle	stock prices; 648
18-year cycle	stock prices (industrial); 648
18-year cycle	stock prices (railroad); 648
18-year cycle	sunspot numbers; alternate cycles reversed; 238; 251; 351; 354
18-year cycle	temperature; 648-650
18-year cycle	tiles; 444; 648
18-20-year cycle	buildings demolished; 444
18.2-year cycle	building activity and construction; 54; 612
18.2-year cycle	floods; Nile River; 54
18.2-year cycle	glaciers; 611
18.2-year cycle	immigration; 54; 442-443; 445; 601; 609-614
18.2-year cycle	industrial companies; 54
18.2-year cycle	loans and discounts; 54
18.2-year cycle	marriages; 54; 601; 620
18.2-year cycle	natural science phenomena; 611
18.2-year cycle	panics; 54
18.2-year cycle	pig iron; 54
18.2-year cycle	public utility company sales; 54
18.2-year cycle	real estate activity; 54; 443-444; 612
18.2-year cycle	sales of an industrial company; 54
18.2-year cycle	stock prices; 401; 435-448
18.2-year cycle	stock prices (industrial); 54
18.2-year cycle	sunspots; 611
18.2-year cycle	sunspots; alternate cycles reversed; 54; 443; 612
18.2-year cycle	tree rings; 54; 113; 298; 443-444; 611-612
18.2-18.3-year cycle	construction; 72
18.2-18.3-year cycle	economic phenomena; 601
18.2-18.3-year cycle	floods; Nile River; 72
18.2-18.3-year cycle	immigration; 72
18.2-18.3-year cycle	an industrial company; 72
18.2-18.3-year cycle	loans and discounts; 72
18.2-18.3-year cycle	marriages; 72
18.2-18.3-year cycle	panics; 72
18.2-18.3-year cycle	pig iron; 72
18.2-18.3-year cycle	public utility company; 72
18.2-18.3-year cycle	real estate activity; 72
18.2-18.3-year cycle	stocks (industrial); 72
18.2-18.3-year cycle	sunspots; alternate cycles reversed; 72
18.2-18.3-year cycle	tree rings; 72
18.32-year cycle	flood stages; Nile River; 443
18.33- (18 1/3)- year cycle	building activity and construction; 26; 343-345; 349; 443-444
18.33- (18 1/3)- year cycle	building permits; 444; 611
18.33- (18 1/3)- year cycle	buildings (residential); 351; 355
18.33- (18 1/3)- year cycle	discounts and loans; 443-444
18.33- (18 1/3)- year cycle	freight traffic (Canadian Pacific Railway); 444
18.33- (18 1/3)- year cycle	furniture produced; 444
18.33- (18 1/3)- year cycle	an industrial company; 443
18.33- (18 1/3)- year cycle	lumber production; 444
18.33- (18 1/3)- year cycle	marriage rates; 343; 345; 349; 443
18.33- (18 1/3)- year cycle	panics; 444
18.33- (18 1/3)- year cycle	pig iron; 443-444
18.33- (18 1/3)- year cycle	pig iron production; 347; 444
18.33- (18 1/3)- year cycle	production; 314; 343-357
18.33- (18 1/3)- year cycle	real estate activity; 17-18; 343; 349; 353-354; 611
18.33- (18 1/3)- year cycle	residential permits; 444
18.33- (18 1/3)- year cycle	sales of an industrial company; 347; 349
18.33- (18 1/3)- year cycle	sales of a public utility company; 27-29; 443-444; 611
18.33- (18 1/3)- year cycle	stock prices; 23; 26; 347-349
18.33- (18 1/3)- year cycle	varves; 26
18.33- (18 1/3)- year cycle	wheat acreage; 345; 349; 444; 611
18.3562-year cycle	stock prices; 442
18.539-year cycle	post office revenues; 598; 600
18.6-year cycle	axis of earth; 748
19-year cycle	earthquakes; 127
19-year cycle	stock prices; 522; 525
19.25- (19 1/4)- year cycle	stock prices; 351
19.4-year cycle	stock prices (industrial); 504; 748
19.4-year cycle	stock prices (railroad); 350-351; 504; 748
19.455-year cycle	international battles; 692
19.5- (19 1/2)-year cycle	war; 602
19.7-year cycle	stock prices; 421; 425; 428
19.9-year cycle	wheat prices; 351
20-year cycle	stock prices (industrial); 748
20-year cycle	stock prices (railroad); 748
20.8-year cycle	sunspots alternate cycles reversed; 748
21-year cycle	grasshoppers; 291
21.75- (21 3/4 )-year cycle	cotton prices; 271
21.95-year cycle	international battles; 247; 627
21.98-year cycle	war battles; 271; 693
22-year cycle	advertising effectiveness. 271
22-year cycle	building activity; 271
22-year cycle	famine; 271
22-year cycle	patents issued; 271; 615
22-year cycle	pig iron production; 271
22-year cycle	post office revenues; 271; 598; 600; 748
22-year cycle	sales of a drug company; 271
22-year cycle	stock prices (combined); 271
22-year cycle	sunspots; 122
22-year cycle	sunspots; alternate cycles reversed; 120; 196; 241
22-year cycle	war; 626; 717
22-year cycle	wheat yield; 271
22-year cycle	wholesale commodity prices; 271
22- 23-year cycles	lake levels; 138-139
22-24-year cycle	suicide rates; 271
22.13-23.11-year cycle	lake levels; 137- 138
22.14- (22 1/7)-year cycle	international battles; 246-247; 627; 695; 708-709; 748
22.19-year cycle	double sunspot cycle; 247
22.2- (22 1/5 )-year cycle	advertising efficiency; 748
22.2- (22 1/5 )-year cycle	female ailments; 749
22.2- (22 1/5 )-year cycle	lynx abundance; 748
22.2- (22 1/5 )-year cycle	sunspot numbers; alternate cycles reversed; 238; 241; 612; 748; 758
22.2- (22 1/5 )-year cycle	wholesale prices; 748
22.22-year cycle	sunspots; alternate cycles reversed; 117; 120; 241-249; 251; 254-259; 262; 264-275
22.5-year cycle	horse prices; 271
22.67- (22 2/3 )-year cycle	advertising efficiency; 292
22.67- (22 2/3 )-year cycle	international battles; 292
22.67- (22 2/3 )-year cycle	grasshopper outbreaks; 279; 291-294
22.67- (22 2/3 )-year cycle	lynx abundance; 292
22.67- (22 2/3 )-year cycle	partridge; 279; 292; 295-297
22.67- (22 2/3 )-year cycle	postal receipts; 292
22.67- (22 2/3 )-year cycle	solar radiation; 295
22.67- (22 2/3 )-year cycle	sunspots; alternate cycles reversed; 292
22.67- (22 2/3 )-year cycle	wholesale prices; 292
22.75-year cycle	lake levels; 138
23-year cycle	lake levels; 292; 749
23-year cycle	river levels; 292; 749
23-year cycle	tree rings; 292; 749
23-year cycle	varves (rock deposit widths); 292; 749
23-year cycle	weather; 292; 749
23.3-year cycle	stock prices; 749
23.778-year cycle	war; 692-693
24-year cycle	wheat prices; 749
25-year cycle	building; 344
26.1-year cycle	stock prices (railroad); 749
26.2745-year cycle	stock prices; 442
27.966-year cycle	post office revenues; 598; 600
30-year cycle	building; 344
30-year cycle	stock prices (railroad); 749
30-year cycle	varves; 125
31.940-year cycle	international battles; 692
33-year cycle	wars and peace; 627
33.3- (33 1/3•)-year cycle	lake levels; 126
33.5-year cycle	varves; 151
33.55-year cycle	lake levels; 137-138
35-year cycle	harvests; 63
35-year cycle	immigration; 63
35-year cycle	lake levels; 240
35-year cycle	plant and tree growth; 63
35-year cycle	tree rings; 63
35-year cycle	rivers freezing; 240
35-year cycle	wine making; 240
35.2-year cycle	earthquakes; 63; 749
35.2-year cycle	lynx abundance; 63; 749
35.5-year cycle	weather; 63
35.9-year cycle	auroras; frequency of; 63
36-year cycle	barometric pressure; 63
36-year cycle	English consols value; 63
36-year cycle	manufacturing production; 63
36-year cycle	wheat prices; 63
36.5- (36 1/2 )-year cycle	floods; Nile River; 115
36.75- (36 3/4)-year cycle	cotton prices; 115
37-year cycle	auroras; frequency of; 115-116
37-year cycle	biological time series; 240
37-year cycle	earthquakes; 115-116
37-year cycle	sunspot (11-year variation of) cycle; 115-116
37-year cycle	floods; Nile River; 115-116
37-year cycle	pine growth; 115-116
37-year cycle	stock prices; 115
37-year cycle	sunspots; alternate cycles reversed; 119; 217; 234-240
37-year cycle	weather; 240
37-year cycle	winters; 115-116; 126
37-year cycle	wheat prices; 115-116
37.2-year cycle	auroras; frequency of; 115
37.4-year cycle	sunspots; 115; 218
37.5- (37 1/2 )-year cycle	stock prices; 749
37.5- (37 1/2 )-year cycle	sunspots; 115; 217-220
37.5- (37 1/2 )-year cycle	sunspots; alternate cycles reversed; 234-240
37.5- (37 1/2 )-year cycle	variation of length of the sunspot cycle; 749
37.5- (37 1/2 )-year cycle	wheat prices; 115
37.9-year cycle	wheat prices; 115
38.214-year cycle	international battles; 692
40.0-year cycle	stock prices; 749
41.7-year cycle	cotton prices; 299
42-year cycle	climate; 224
42-year cycle	cotton prices; 48; 50-51; 270
42-year cycle	prices; 224
42-year cycle	sunspot numbers; 119; 224; 270; 528
42-year cycle	tree rings; 270; 280; 299-303; 528
42-year cycle	wheat prices; 270; 528; 575
42.023-year cycle	tree ring widths; 225-226; 280; 299-303
42.5-year cycle	wheat prices; 299; 302
42.8-year cycle	sunspots; 225
44.000-year cycle	post office revenues; 598; 600
44.6667-year cycle	stock prices; 442
46-year cycle	droughts; 749
46-year cycle	lake levels; 749
46-year cycle	tree ring widths; 749
50-year cycle	commodity prices and wars; 627
50-year cycle	manufacturing production; 749
50-year cycle	wholesale prices; 749
50- to 60-year cycle	agricultural workers’ wages; 304
50- to 60-year cycle	bank deposits; 304
50- to 60-year cycle	Bank of France portfolio; 304
50- to 60-year cycle	coal consumption; 304
50- to 60-year cycle	coal production; 304
50- to 60-year cycle	coal miners’ wages; 304
50- to 60-year cycle	cotton acreage; 304
50- to 60-year cycle	copper prices; 304; 528
50- to 60-year cycle	exports; 304
50- to 60-year cycle	imports; 304
50- to 60-year cycle	interest rates; 304
50- to 60-year cycle	lead production; 304
50- to 60-year cycle	oat acreage; 304
50- to 60-year cycle	pig iron production; 304
50- to 60-year cycle	prices; 304
50- to 60-year cycle	ship building; 304
50- to 60-year cycle	textile workers’ wages; 304
50- to 60-year cycle	trade (foreign); 304
50- to 60-year cycle	war; 717
50- to 60-year cycle	wheat prices; 304
51.969-year cycle	varves; 164-165
53.500-year cycle	war; 691-692
54-year cycle	agricultural workers’ wages; 63
54-year cycle	bank deposits; 63
54-year cycle	coal consumption; 63
54-year cycle	coal production; 63
54-year cycle	consols (British) value; 63
54-year cycle	copper prices; 63; 528; 578-579
54-year cycle	cotton acreage; 63
54-year cycle	devaluation in England; 63
54-year cycle	economic affairs; 280; 304
54-year cycle	interest rates; 63
54-year cycle	lead production; 63
54-year cycle	oat acreage; 63
54-year cycle	pig iron production; 63
54-year cycle	prices; 63
54-year cycle	rent in France; 63
54-year cycle	river run off; 304
54-year cycle	ship building; 63
54-year cycle	textile workers; 63
54-year cycle	trade (foreign); 63
54-year cycle	tree rings; 63; 280; 304-307
54-year cycle	varves (sedimentary rock or mud deposits); 304
54-year cycle	wheat prices; 63; 528; 576-579
54.5-year cycle	stock prices (railroad); 749
54.6-year cycle	stock prices (railroad); 63
57-year cycle	international battles; 627; 691; 693; 695; 708; 711; 716
61.4-year cycle	international battles; 627
62-year cycle	elephant abundance; 10
66.5-year cycle	cotton prices; 749
67-year cycle	varves; 151
78.571-year cycle	post office revenues; 598; 600
79-year cycle	sunspot numbers; 221
80-year cycle	sunspots; 119; 198; 201; 206; 215;
82.308-year cycle	international battles; 692
83-year cycle	sunspots; 221
83-year cycle	winters; 126
84-year cycle	social and political unrest; 627
84+ -year cycle	sunspot numbers; 221
89-year cycle	sunspots; 221
94.55-year cycle	lake levels; 137-138
95.7143-year cycle	stock prices; 442
100.0-year cycle	stock prices (railroad); 749
105-year cycle	women’s fashions; 63
117.857-year cycle	post office revenues; 598; 600
125.882-year cycle	international battles; 692
130-year cycle	earthquakes; 126
130-year cycle	volcanic eruptions; 126
142-year cycle	international battles; 63; 627; 693; 695; 708; 712; 714
150-year cycle	pig iron prices; 749
159-year cycle	pig iron prices; 63
170-year cycle	civil wars; 627
200-year cycle	sunspots; 119; 198; 201-216
300-year cycle	variation of length of sunspot cycle; 749
510-year cycle	civil wars; 627

 

Reference:
Foundation for the Study of Cycles (1970/1987) - Cycles - Classic Library Collection. 

Ray Tomes (2023) - Cycles Period Tables.