All these experiences and the reports of them are both a part of and a stimulus to the "back to the land movement." This movement has its mainspring in two plain economic facts, namely: first, clerical and other indoor vocations have become overcrowded; second, while crops grow bigger year by year, the number of mouths to feed multiplies even faster, and unless more land is tilled and all land cultivated more intensively, we shall eat less and less, as a race, and pay more and more for what we eat. Here is opportunity for the men of bone and muscle--opportunity for health, prosperity, usefulness to humanity, enjoyment and happiness. Other opportunities lie in the conservation of our forests and the planting and development of new timber lands; in the building up of new industries for manufacturing our raw materials; in restoring the American flag to the seas of the world; in extending our foreign trade; in opening and operating inland waterways; in irrigating or draining our millions of square miles of land now lying idle; in the development of Alaska, and the harnessing of our great mines of "white coal"--water-power. Our foreign trade requires men of this type to travel in all parts of the world as commercial ambassadors, diligently collecting, compiling, and sending back to the United States information necessary in manufacturing goods for foreign consumption; also information regarding credits, prices, shipping, packing--in short, complete and detailed knowledge about commerce with foreign lands, how to secure it and how to hold it.