Costs calculated in terms of probability, 69. — Deriving particular specifications of supply from given probabilities of cost: initial conclusions, 71. — More complex conditions: dispersion and skewness of cost expectations, 74; variations in dispersion, 78; in skewness, 85; in both, 86. — Influence of dispersion and skewness on monopoly, 86. — "Marginal probability of net revenue, " and "marginal production risk, " 87. — Conclusions, 88.

Introduction: the problem studied, 385. — The cycle in yields of certain crops, 388. — Sunspots and the solar constant and the cycle in yield of cotton, 392. — Solar and sky radiation and the cycle in yields of cotton and apples, 396. — Reasons for the correlation observed, 398. — Misconceptions in earlier investigations, 403. — Summary and conclusions, 403.

The evolution of machinery, 256. — Commodity prices and money wages, 257. — Real wages, 260. — Profit inflation, 262. — The utilization of mechanical inventions, 263. — Capital formation and the factory system, 264. — Real wages and the market, 267. — Comparisons with other countries and periods: Spain, 267. — France, 270. — The Price Revolution, 270. — Conclusions, 272.