HALSTED, Byron David, agriculturist, born in Venice, New York, 7 June, 1852. He was graduated at the Michigan agricultural college in 1871, and subsequently studied at Harvard, where in 1878 he received the degree of D. So. In 1873-'4 he was instructor in history and algebra at the Agricultural college, and in 1874-'5 instructor in botany in Harvard. In 1875-'9 he taught in the Chicago high school, and then became editor of the "American Agriculturist," which office he held until 1884. He was then called to fill the chair of botany in the Iowa agricultural college. Dr. Halsted is a fellow of the American association for the advancement of science, and a member of other societies. He has contributed largely to all the agricultural and botanical journals in the United States, and published "The Vegetable Garden" (Chicago, 1882); "Farm Conveniences" (New York, 1883); and "Household Conveniences" (1883).