... rest to-day inside a tiny square of hand-hewn palings. Also, Gooper and Greenlaw in their time cleared the virgin forest from three fields of forty acres. To-day I have those three fields sown with Canada peas, and in the spring they shall be ploughed under for green manure. ... — John Barleycorn • Jack London
... fed to cattle, sheep, and swine, we shall also gradually increase our human food supply. Ultimately our milk-producing and meat-producing animals will be fed only the grass grown upon the non-arable lands and possibly some refuse forage not suitable for human food or more valuable for green manure, unless we modify our present practice and tendency, which we can do if the proper influences are exerted by the intelligent people of this country, and thus make possible the continuation of high standards of living for ... — The Story of the Soil • Cyril G. Hopkins
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