Sir William Beveridge and the 900-Year Wheat Price Study

Compiled from the Foundation for the Study of Cycles archive (Cycles Magazine, vols. 1950–1957)

Who He Was, According to the Archive

The archive gives Beveridge slightly more formal treatment than it gave Brunt — he's consistently referred to by his full title, "Sir William H. Beveridge," with a proper citation to his 1922 paper. But as with Brunt, the magazine offers no biographical detail beyond that: no dates, no institutional affiliation, nothing about his career outside this one body of work. He appears purely as the author of a single, monumental statistical study.

Note for verification: the magazine's silence on his biography means anything beyond what's below (his career, his other work, his life dates) is not sourced from these volumes and should be checked independently if you want to include it in your forum post.

The Core Work

Beveridge's contribution, as the Foundation describes it, was:

"Wheat Prices and Rainfall in Western Europe," Journal, Royal Astronomical Society, 85:412-78, London, 1922.

The 1953 volume gives the fullest description of the study's scale and method:

"One of the difficult pieces of work in the history of periodogram analysis was accomplished by Sir William H. Beveridge, to determine whether or not there were permanent cycles in wheat prices in Eastern and Western Europe. In view of the fact that England was for centuries a free-trade country, its wheat prices could be expected to run in consonance with those of the Continent. Sir William used index numbers so constructed that the upward leap in prices during the transition from medieval to modern times was removed, subjecting them to harmonic analysis over a range of approximately 900 years."

That figure is worth sitting with: 900 years of price data, harmonically analyzed by hand (this was 1922 — decades before any kind of computing assistance). Elsewhere the magazine specifies the working range more precisely as wheat prices in Europe from 1500 to 1869 — with Beveridge drawing on "a large number of tables of prices from nearly fifty places in six regions": Scotland and England, the Low Countries, France, North Germany, South Germany, and Austria, each region weighted equally.

What He Found

Beveridge's results, as summarized by the Foundation, were extraordinarily rich — almost too rich:

"The number of cycles is astonishing, but some of the longer ones may be combinations of short ones. Two cycles, with lengths of about 5 and 35 years, stand out strongly both in the price of wheat and in various weather records. Seven, with lengths of 5.7, 9.8, 12.8, 15.2, 19.9, 54.0, and 68.0 are about as strong as the first two in prices, but appear only faintly or not at all in the weather. Six more are mildly evident in both prices and weather, and hints of others are indicated by fine dotted lines."

A few specific cycle lengths recur throughout the archive as touchstones:

• ~54 years — found "without correlation" to any known weather rhythm, this cycle stood out as a significant concentration of energy in Beveridge's data on its own terms. The Foundation connects this independently to a 54-year wave they trace in U.S. commodity prices back to 1790, and to what some observers dubbed a recurring "war cycle" (each ~54-year peak roughly coinciding with a major American war).

• ~7.42 years — a minor cycle, closely bracketing Brunt's 7.50-year figure and Gillette's 7.47-year figure, treated by the Foundation as a significant three-way convergence across independent researchers and datasets.

• ~9.75 years — in a later (1956) piece structured as a dialogue, Dewey notes that Beveridge's European wheat data showed a 9.75-year cycle, distinct from and unconnected to a 9.3-year cycle Dewey found in U.S. wheat prices — an interesting divergence rather than an agreement, worth noting since not every comparison in the archive lines up neatly.

Cross-Validation: Beveridge and Brunt Side by Side

The Foundation's December 1953 report includes what's probably the single most important piece of comparative work in the archive involving Beveridge: Figure 57, a direct visual comparison of Beveridge's wheat-price cycles against Brunt's independently-derived weather cycles. The write-up is explicit about the method and the payoff:

"The right-hand side of Figure 57 compares Beveridge's cycles with those found by Brunt in an elaborate harmonic analysis of rainfall, temperature, and atmospheric pressure in twelve European cities... The most obvious approaches to agreement between Beveridge and Brunt fall near 3½, 5, 8, 9½, and 35 years."

This is the crux of why the Foundation valued Beveridge so highly: an economist working from price ledgers and a meteorologist working from weather station records, using completely independent data, converged on strikingly similar cycle lengths. To Dewey and his colleagues, that kind of cross-domain agreement was the strongest available evidence that these weren't statistical artifacts.

A Third Voice: H. W. Clough's Corroboration

A 1953 letter to the magazine from H. W. Clough (identified as a former Meteorologist for the U.S. Weather Bureau) adds a third independent line of evidence, tracing the same wheat-price cycle back even further:

"Bruckner, in 1890, published his researches on a 35-year cycle in the temperature and rainfall of western Europe... Beveridge, in 1922, Jour. Roy. Stat. Society, gave a periodogram of wheat prices in England from 1500 to 1870, showing a period of considerable amplitude at 35.5 years."

Clough goes on to describe his own 1905 and 1939 papers extending this line of research, arriving at cycle lengths of 36.5 and 37 years respectively — all clustering around the same neighborhood as Beveridge's 35.5-year figure. This kind of layered corroboration, spanning Brückner (1890) → Beveridge (1922) → Clough (1905, 1939), is a good illustration of how this small community of researchers kept rediscovering and refining each other's results over six decades, often without much interdisciplinary contact.

Why He Mattered to the Foundation

Dewey's team treated Beveridge the same way they treated Brunt: not as a source of cycle theory, but as an independent, rigorous data source against which theirs and others' findings could be tested. The scale of his underlying dataset (900 years, fifty locations, six regions) made him one of the most heavily-cited authorities in the entire archive for pre-20th-century economic cycle data — arguably second only to Brunt in how often he's invoked as a cross-check.

Suggested Forum Angle

Given how directly Beveridge and Brunt cross-reference each other in Figure 57, it might work well to present them as a pair on your forum — the economist and the meteorologist, working independently in the 1920s, converging on nearly the same set of cycle lengths from completely different kinds of records. That convergence, more than either man's individual biography, seems to be the real story the Foundation was trying to tell.