What causes this advance of rent is the next question that arises, and it necessitates an examination of the effect of material progress upon the distribution of wealth. Separating the factors of material progress into increase of population and improvements in the arts, it is first seen that increase in population tends constantly, not merely by reducing the margin of cultivation, but by localizing the economies and powers which come with increased population, to increase the proportion of the aggregate produce which is taken in rent, and to reduce that which goes as wages and interest. Then eliminating increase of population, it is seen that improvement in the methods and powers of production tends in the same direction, and, land being held as private property, would produce in a stationary population all the effects attributed by the Malthusian doctrine to pressure of population. And then a consideration of the effects of the continuous increase in land values which thus spring from material progress reveals in the speculative advance inevitably begotten when land is private property a derivative but most powerful cause of the increase of rent and the crowding down of wages. Deduction shows that this cause must necessarily produce periodical industrial depressions, and induction proves the conclusion; while from the analysis which has thus been made it is seen that the necessary result of material progress, land being private property, is, no matter what the increase in population, to force laborers to wages which give but a bare living. This identification of the cause that associates poverty with progress points to the remedy, but it is to so radical a remedy that I have next deemed it necessary to inquire whether there is any other remedy. Beginning the investigation again from another starting point, I have passed in examination the measures and tendencies currently advocated or trusted in for the improvement of the condition of the laboring masses. The result of this investigation is to prove the preceding one, as it shows that nothing short of making land common property can permanently relieve poverty and check the tendency of wages to the starvation point.