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 L. will not buy as much when prices are high as it will when prices are low, it will not be so effectual for carrying on business; more money is necessary in dear times than in cheap times to produce the same changes in the same commodities. Even supposing trade to have remained stationary, a greater capital would be required to carry it on after such a rise of prices as has been described than was necessary before that rise. But in this case the trade will not have remained stationary; it will have increased--certainly to some extent, probably to a great extent. The 'loanable capital,' the lending of which caused the rise of prices, was lent to enable it--to augment. The loanable capital lay idle in the banks till some trade started into prosperity, and then was lent in order to develope that trade; that trade caused other secondary developments; those secondary developments enabled more loanable capital to be lent; and that lending caused a tertiary development of trade; and so on through society.