. The principles of agriculture, a text-book for schools and rural societies . PASTURES, MEADOWS, AND FORAGE 199 313a. Observe how different the roots of clover and timothyare (Figs. 79, 80). One feeds in the subsoil and subsurfacesoil, has many little organisms on its rootlets, which are callednitrogen-fixers (138); that is, they take the free nitrogen ofthe soil air, and it then becomes of use to the timothy has many small fibrous roots, which remain nearthe surface, and have no nitrogen-fixing organisms. It will be.

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