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146 every such industry is liable to grave fluctuations, and the most important—the provision industries—to the gravest and the suddenest. They are dependent on the casualties of the seasons. A single bad harvest diffused over the world, a succession of two or three bad harvests, even in England only, will raise the price of corn exceedingly, and will keep it high. And a great and protracted rise in the price of corn will at once destroy all the real part of the unusual prosperity of previous good times. It will change the full working of the industrial machine into an imperfect working; it will make the produce of that machine less than usual instead of more than usual; instead of there being more than the average of general dividend to be distributed between the producers, there will immediately be less than the average.

And in so far as the apparent prosperity is caused by an unusual plentifulness of loanable capital and a consequent rise in prices, that prosperity is not only liable to reaction, but certain to be exposed to reaction. The same causes which generate this prosperity will, after they have been acting a little longer, generate an equivalent adversity. The process is this: the plentifulness of loanable capital causes a rise of prices; that rise of prices makes it necessary to have more loanable capital to carry on the same trade. £100,000 will not buy as much when prices