WARDER, John Aston, physician, born near Philadelphia, Pennsylvania, 19 January, 1812 ; died in North Bend, Ohio, 14 July, 1883. In early life he was associated with William Bartram and William Darlington, who were among his neighbors, and with John J. Audubon, Frangois A. Michaux, and Thomas NuHall, who were visitors at his father's house and from whom he acquired a great fondness for nature and learned to use his powers of observation. In 1830 he removed with his parents to Springfield, Ohio, but, returning to Philadelphia, was graduated at Jefferson medical college in 1836. Settling in Cincinnati in 1837, he followed his profession there until 1855. Meanwhile he took an active interest in everything that tended to advance education and science. He was early chosen a member of the school-board, and he travelled extensively, studying systems of teaching and the construction of school-houses that he might introduce improved plans into Cincinnati. He was associated in the organization of the Cincinnati astronomical society, the Western academy of natural sciences, the Cincinnati horticultural society, the Ohio Medical college, and the Cincinnati society of natural history, of which he was president for five years. Dr. Warder also served on the State board of agriculture and was among the first to direct, public attention to the beautifying of public and private parks and cemeteries. He was associated in the establishment of the Spring Grove cemetery and did much to develop the public interest in landscape, gardening. In 1873 he was appointed United States commissioner to the World's fair in Vienna, and prepared the official report for the United States government on " Forests and Forestry." lie was connected with the founding of the American forestry association in 1875 and was active in the establishment of the American forestry congress. In 1883 he was chosen honorary president of the Ohio state forestry association, and was appointed by the department of agriculture to report upon the forestry of the northwestern states. He described in 1853 the Catalpa speciosa, a tree that had not been recognized until that time as a distinct species, but which is now accepted as one of the most valuable of forest-trees. In 1850 he began the publication of the " Western Horticultural Review," which continued until 1854, when, with James W. Ward, he established the " Botanical Magazine and Horticultural Review," which he then edited for several years. Besides making contributions to medical, agricultural, and horticultural periodicals, he translated Trousseau and Belloc on "Laryngeal Phthisis" (Philadelphia, 1839), and published " Hedge Manual: a Complete Treatise on Hedges, Evergreens, and all Plants suitable for American Hedging" (New York, 18,58); "American Pomology: Part I., Apples" (1867) ; and an edition of Alphonse Du Breuil's "Vineyard Culture " (1867).--His son, Robert Bowne, chemist, born in Cincinnati, Ohio, 28 March, 1848, was graduated at Earlham college, Richmond, Indiana, in 1866 and at the Lawrence scientific school of Harvard in 1874. He has since that time been engaged in teaching chemistry and physics, and in 1883-'7 was state chemist of Indiana. In 1887 he removed to Washington, D.C. Professor Warder is a member of various societies, and has contributed papers to their transactions and to scientific journals.