The influences which, wherever there is personal relation between master and slave, slip in to modify chattel slavery, and to prevent the master from exerting to its fullest extent his power over the slave, also showed themselves in the ruder forms of serfdom that characterized the earlier periods of European development, and aided by religion, and, perhaps, as in chattel slavery, by the more enlightened but still selfish interests of the lord, and hardening into custom, universally fixed a limit to what the owner of the land could extort from the serf or peasant, so that the competition of men without means of existence bidding against each other for access to the means of existence, was nowhere suffered to go to its full length and exert its full power of deprivation and degradation. The helots of Greece, the métayers of Italy, the serfs of Russia and Poland, the peasants of feudal Europe, rendered to their landlords a fixed proportion either of their produce or their labor, and were not generally squeezed past that point. But the influences which thus stepped in to modify the extortive power of land ownership, and which may still be seen on English estates where the landlord and his family deem it their duty to send medicines and comforts to the sick and infirm, and to look after the well-being of their cottagers, just as the Southern planter was accustomed to look after his negroes, are lost in the more refined and less obvious form which serfdom assumes in the more complicated processes of modern production, which separates so widely and by so many intermediate gradations the individual whose labor is appropriated from him who appropriates it, and makes the relations between the members of the two classes not direct and particular, but indirect and general. In modern society, competition has free play to force from the laborer the very utmost he can give, and with what terrific force it is acting may be seen in the condition of the lowest class in the centers of wealth and industry. That the condition of this lowest class is not yet more general, is to be attributed to the great extent of fertile land which has hitherto been open on this continent, and which has not merely afforded an escape for the increasing population of the older sections of the Union, but has greatly relieved the pressure in Europe—in one country, Ireland, the emigration having been so great as actually to reduce the population. This avenue of relief cannot last forever. It is already fast closing up, and as it closes, the pressure must become harder and harder.