JULIEN, Alexis Anastay, geologist, born in New York city, 13 February, 1840. He was graduated at Union college in 1859, but continued as a student in the chemical laboratory a year longer. In 1860 he went to the guano island of Sombrero as resident chemist, and continued there until 1864, also making studies of its geology and natural history, especially of its birds and land shells. He sent his collections to the Smithsonian institution, for which he also made meteorological observations, this island being the most southerly under its direction. In 1862 he made a geological survey of the islets around St. Bartholomew for the Swedish government, receiving in recognition of his services a gold medal from the king of Sweden. Soon after the establishment of the Columbia school of mines he became the assistant in charge of the quantitative laboratory, and in 1885 he was appointed instructor in charge of the department of microscopy and biology in the same institution, he was connected with the geological survey of Michigan in 1872, making a special study of the crystalline rocks and ores of the Marquette district, and his lithological reports appear in the published volumes of the survey. In 1875 he began the study of the petrography of North Carolina for the state geological survey, and served for three successive summers in the field. He visited the islands of Bonaire, Curacoa, and Aruba, W. I., during 1881-'2, and investigated the guano deposits and geology of these islands. The degree of Ph.D. was conferred on him in 1882 by the University of New York. He is a member of scientific societies, and was vice president of the New York academy of sciences in 1884. Dr. Julien was one of the founders of the New York microscopical society in 1880, and in 1883 was one of the originators of the Society of naturalists of the eastern United States. His contributions to scientific literature have been very numerous. Among his papers are "On the Geological Action of the Humus Acids" (1879); "On Spodumene and its Alterations" (1879); "Building Stones of New York City and Environs" and; "The Durability of Building Stones in New York City and Vicinity" (contributed to the United States census reports, 1880); "The Genesis of the Crystalline iron-Ores" (1882); "Notice on the Microscopical Examination of a Series of Ocean, Lake, River, and Desert Sands" (1884); and "Oil the Variation of Decomposition in the Iron Pyrites, its Cause, and its Relation to Density" (1886).