Every period of expanding credit in speculative movements has furnished proofs of this tendency. A standing example is furnished in mining stocks, in which the temptation to misrepresent prospects by “salting” and false assays is proverbial. Almost as notorious are the misrepresentations associated with bonds of newly established cities or other municipalities. Not all such misrepresentation is intended fraud, but the immediate interest of the broker clouds his judgment as to conditions of final settlement. With little to lose and everything to gain in the immediate transaction, his judgment is necessarily biased. The merely speculative buying and selling of stocks by margins has little to do with the general character of indebtedness, except to increase somewhat the risks of legitimate brokerage. The “bulls and bears” on exchange make their gains by fluctuations in market values, and, like all gamblers, delight in producing false impressions upon their opponents in the game. This fact adds to the uncertainty of all standing credit, and so increases the natural rate of interest. This effect upon interest will be noticed in considering the nature of interest and conditions affecting it. “_Borrowed money._”—In all the forms of deferred payment, except standing accounts, it is customary to represent the amount of the debt as “borrowed money,” no matter how the transaction occurs. When a farmer buys his farm with a promise to pay five years hence, his note is said to represent so much “borrowed money,” while in fact he has simply borrowed the farm. The reason is, that the farm is represented by its value in dollars, and the promise is to return that value in dollars at the end of five years.