_How Economic Friction works to the Disadvantage of Immigrants._--Unless capital grows more rapidly than population, there is a certain friction to be overcome in obtaining places for new laborers. If they come largely as immigrants, they are crowded at the points of disembarkation and are then scattered over a large territory. They may have to gain employment by offering to _entrepreneurs_ some inducement to take them. If capital has not increased, and the _entrepreneurs_ are in no special need of new men, they will take them only at a rate of pay which is low enough to afford of itself a slight margin of profit. If the capital has already grown larger and the new men are needed, the situation favors them, and their pay is likely to be as high as it was before, or higher.
_The Effect of Increasing Capital._--The growth of capital has an opposite effect. It means a lower rate of interest, though it means more interest in the aggregate, since it insures a larger fund on which the interest is received. The rate does not decline as rapidly as the amount of the fund increases, and this insures a larger gross income from the fund; and it also insures larger individual incomes for many persons. There is, then, a large number of people who are in a position to make their consumption more luxurious, and this causes an upward movement of labor and capital in the group system. More workers will be needed in the subgroups _A´´´_, _B´´´_, and _C´´´_, where raw materials receive the finishing touches, and also in the other subgroups above the lowest tier. It is to these subgroups that a large portion of the new capital itself will come, and the labor will come with it. Larger incomes, more luxury, more labor spent in elaborating goods as compared with that required for procuring crude materials,--such is the order.
_Effect of an Increase of Both Labor and Capital._--It is clear that a certain increase of capital might practically neutralize the increase of population, in so far as the movements thus far considered are concerned, and a greater increase of capital would reverse the original downward movement caused by the increase of labor and result in a permanent upward movement toward the subgroups _A´´´_, _B´´´_, and _C´´´_. In this case the men occupy themselves more and more in making the higher form utilities. They make finer clothing, costlier furniture, etc., and the new production requires proportionately less raw material than did the old. This is the supposition which corresponds to the actual facts. Capital is increasing faster than labor, and consumption is growing relatively more luxurious; dwellings, furnishings, equipage, clothing, and food are improving in quality more than they are increasing in quantity. Goods of high cost are predominating more and more, and the subgroups that produce them are getting larger shares of both labor and capital. Population drifts locally toward centers of manufacturing and commerce. It moves toward cities and villages in order to get into the subgroups which have there their principal abodes. The growth of cities is the visible sign of an upward movement of labor in the subgroup series.