Nathan Allen, Popular Science Monthly (1883)
“ In considering this exchange of agriculture for other pursuits, a question of great interest arises: What is to be its effect upon physical organization and the permanent prosperity of a people? No fact is more firmly established than that agricultural pursuits are the most healthy of all, and that those engaged in them transmit physical development in its best estate. All experience proves that an exclusive city population tends gradually to degenerate physically, and that the stock can not be kept good from generation to generation. ”
