of multiplying the species beyond any assignable limits, so that the number to be provided for steadily advances and the status of ease and abundance gives way to a status of want and constraint. Emigration is the first and simplest remedy. By winning more land the ratio of population to land is once more rendered favorable. It is to be noticed, however, that emigration is painful to all men. To the uncivilized man, to emigrate means to abandon a mass of experiences and traditions which have been won by suffering, and to go out to confront new hardships and perils. To the civilized man migration means cutting off old ties of kin and country. The earth has been peopled by man at the cost of this suffering.
On the side of the land also stands the law of the diminishing return as a limitation. More labor gets more from the land, but not proportionately more. Hence, if more men are to be supported, there is need not of a proportionate increase of labor, but of a disproportionate increase of labor. The law of population, therefore, combined with the law of the diminishing returns, constitutes the great underlying condition of society. Emigration, improvements in the arts, in morals, in education, in political organization, are only stages in the struggle of man to meet these conditions, to break their force tor a time, and to win room under them for ease and enlargement. Ease and enlargement mean either power to support more men on a given stage of comfort or power to advance the comfort of a given number of men. Progress is a word which has no meaning save in view of the laws of population and the diminishing return, and it is quite natural that anyone who fails to understand those laws should fall into doubt which way progress points, whether towards wealth or poverty. The laws of population and the diminishing return, in