ROOSEVELT 111 ROOT the most versatile man America has pro- duced. He was apparently impulsive in his utterances, but when his conclusions were examined, almost invariably they were found to rest upon sound erudition and had been reached by sustained and consecutive thought. His reading was unusually extensive, and his personal friendship with statesmen, scientists and eminent thinkers and writers of many lands made him familiar with the best and most advanced contemporaneous thought of the world. Besides a multitude of magazine and newspaper articles he wrote the following volumes: "Winning of the West" (1889- 96) ; "History of the Naval War of 1812" (1882) ; "Hunting Trips of a Ranchman" (1885) ; "Life of Thomas Hart Benton" (1886) ; "Life of Gouverneur Morris" (1887) ; "Ranch Life and Hunting Trail" (1888) ; "History of New York" (1890) ; "The Wilderness Hunter" (1893) ; "Amer- ican Ideals and Other Essays" (1897) ; "The Rough Riders" (1899) ; "Life of Oliver Cromwell" (1900) ; "The Strenu- ous Life" (1900) ; "Works" (8 Vols., 1902) ; "The Deer Family" (1902) ; "Out- door Pastimes of an American Hunter" (1906) ; "Good Hunting" (1907) ; "True Americanism"; "African and European Addresses" (1910) ; "African Game Trails" (1910) ; "The New Nationalism" (1910); "Realizable Ideals" (the Earl lectures, 1912) ; "Conservation of Woman- hood and Childhood" (1912) ; "History as Literature, and Other Essays" (1913) ; "Theodore Roosevelt, an Autobiography" (1913) ; "Life Histories of African Game Animals" (2 vols., 1914) ; "Through the Brazilian Wilderness" (1914) ; "America and the World War" (1915) ; "A Book- lover's Holidays in the Open" (1916) ; "Fear God, and Take Your Own Part" (1916); "Foes of Our Own Household" (1917) ; "National Strength and Inter- national Duty" (Stafford Little Lectures, Princeton Univ., 1917) ; "Theodore Roose- velt's Letters to His Children" (1919). ROOSEVELT, THEODORE, an Ameri- can military officer and public of- ficial, born in Oyster Bay, N. Y., in 1887, oldest son of Theodore Roosevelt (q. v.). He graduated from Harvard University in 1908, receiving an honorary degree of M.A. in 1919. After leaving college he engaged in business. Upon the entrance of the United States into the World War, he volunteered, being commissioned major of the 26th infantry on April 20, 1917, and being promoted lieutenant-colonel in September, 1918. He saw service in France from June, 1917, to the end of the war, participating in the battles at Cantigny, Soissons, and in the Argonne- Meuse and the St. Mihiel offensives. He was wounded and received the Legion of Honor and the Croix de Guerre. He was an organizer of the American Legion, a member of the National Executive Com- mittee of the Boy Scouts of America, THEODORE ROOSEVELT and trustee of the American Museum of Natural History, New York. In Novem- ber, 1919, he was elected to the New York State Assembly, and was elected again in November, 1920. He wrote "Average Americans" (1919). He was nominated Assistant Secretary of the Navy on March 7, 1921, by President Harding, and confirmed March 9th. ROOT, in anatomy, that part of any organ or appendage of the body which is buried in another part. Thus the root of a nail is the portion covered by the skin; the root of a tooth, the base of it which is lodged in a socket. In astronomy, the moment from which one begins to calculate the time of revo- lution of a planet. In botany, the radix or descending axis of a plant. The roots of dicotyledons are exorhizal, those of monocotyledons en- dorhizal, and those of acotyledons hetero- hizal. A root has no perfect bark, true pith, medullary sheath, or true leaves, and only a thin epidermis, a few stomata, and very rarely leafbuds. Its growth is
