This may be easily shown by a diagram in which the capital in one employment is represented by _A B_, and which exceeds _C D_, that in another employment, by the amount of _A F_. It is not necessary that the whole of the excess, _A F_ should be transferred to _C D_ to make the two capitals equal, but only _A E_, which, added to _C D_, brings _C D_ to an equality with _E B_. This equalizing process, commonly described as the transfer of capital from one employment to another, is not necessarily the onerous, slow, and almost impracticable operation which it is very often represented to be. In the first place, it does not always imply the actual removal of capital already embarked in an employment. In a rapidly progressive state of capital, the adjustment often takes place by means of the new accumulations of each year, which direct themselves in preference toward the more thriving trades. Even when a real transfer of capital is necessary, it is by no means implied that any of those who are engaged in the unprofitable employment relinquish business and break up their establishments. The numerous and multifarious channels of credit through which, in commercial nations, unemployed capital diffuses itself over the field of employment, flowing over in greater abundance to the lower levels, are the means by which the equalization is accomplished. The process consists in a limitation by one class of dealers or producers and an extension by the other of that portion of their business which is carried on with borrowed capital. “Political economists say that capital sets toward the most profitable trades, and that it rapidly leaves the less profitable and non-paying trades. But in ordinary countries this is a slow process, and some persons, who want to have ocular demonstrations of abstract truths, have been inclined to doubt it because they could not see it. The process would be visible enough if you could only see the books of the bill-brokers and the bankers. If the iron-trade ceases to be as profitable as usual, less iron is sold; the fewer the sales the fewer the bills; and in consequence the number of iron bills [at the banks] is diminished. On the other hand, if, in consequence of a bad harvest, the corn trade becomes on a sudden profitable, immediately ‘corn bills’ are created in large numbers, and, if good, are discounted [at the banks]. Thus capital runs as surely and instantly where it is most wanted, and where there is most to be made of it, as water runs to find its level.”(177)