Among other names by which alfalfa is known are the following: Lucerne; French Lucerne; French Clover, in part; Mexican Clover, in part; Lucerne Clover; Lucerne Medicago; Alfalfa Clover; Chilian Clover; Brazilian Clover; Syrian Clover; Sainfoin, erroneously; Spanish Trefoil; Purple Medick; Manured Medick; Cultivated Medicago; Medick. _Persian_, Isfist; _Greek_, Medicai; _Latin_, Medica, Herba Medica; _Italian_, Herba Spagna; _Spanish_, Melga or Meilga, also (from the Arabic), Alfalfa, Alfasafat; _French_, La Lucerne; _German_, Lucerne, Common Fodder, Snail Clover, Blue Snail Clover, Branching Clover, Stem Clover, Monthly Clover, Horned Clover, in part, Perennial Clover, Blue Perennial Clover, Burgundy Clover, Welsh Clover, Sicilian Clover. Alfalfa belongs to the botanical family Leguminosae, or the legumes, of which there are thousands of species, and is thus related to all clovers, peas, vetches and beans. Its botanical name is _Medicago sativa_. There are some fifty species of the genus Medicago that are known, but alfalfa and one or two others are all that are of practical value as fodders. It is a true perennial plant, smooth, upright, branching, ordinarily growing from one to four feet high, yet in some instances much higher, owing to conditions of soil, climate and cultivation. Its leaves are three parted, each leaflet being broadest about the middle, rounded in outline and slightly toothed toward the apex. The purple pea-like flowers instead of being in a head, as in red clover, are in long, loose clusters or racemes. These are scattered along the plant’s stems and branches, instead of being especially borne, as in red clover, on the extremities of the branches. The matured seed-pods are spirally twisted through two or three complete curves, and each pod contains several seeds. The seeds are kidney-shaped, and average about one-twelfth of an inch long by half as thick. They are about one-half larger than seeds of red clover, and in color are at their best an olive green or a bright egg-yellow, instead of a reddish or mustard yellow, or faded brown. The ends of the seeds are slightly compressed where they are crowded together in the pod. Alfalfa is very long-lived; fields in Mexico, it is claimed, have been continuously productive without replanting for over two hundred years, and others in France are known to have flourished for more than a century. Its usual life in the United States is probably from ten to twenty-five years, although there is a field in New York that has been mown successively for over sixty years. It is not unlikely that under its normal conditions and with normal care it would well-nigh be, as it is called, everlasting. ITS WONDERFUL ROOT SYSTEM