HAYDEN

hayden, ferdinand vandeveer (1829-1887), american geologist, was born at westfield, massachusetts, on the 7th of september 1829. he graduated from oberlin college in 1850 and from the albany medical college in 1853, where he attracted the notice of professor james hall, state geologist of new york, through whose influence he was induced to join in an exploration of nebraska. in 1856 he was engaged under the united states government, and commenced a series of investigations of the western territories, one result of which was his _geological report of the exploration of the yellowstone and missouri rivers in 1859-1860_ (1869). during the civil war he was actively employed as an army surgeon. in 1867 he was appointed geologist-in-charge of the united states geological and geographical survey of the territories, and from his twelve years of labour there resulted a most valuable series of volumes in all branches of natural history and economic science; and he issued in 1877 his _geological and geographical atlas of colorado_. upon the reorganization and establishment of the united states geological survey in 1879 he acted for seven years as one of the geologists. he died at philadelphia on the 22nd of december 1887. his other publications were: _sun pictures of rocky mountain scenery_ (1870); _the yellowstone national park_, illustrated by chromolithographic reproductions of water-colour sketches by thomas moran (1876); _the great west: its attractions and resources_ (1880). with f. b. meek, he wrote (_smithsonian institution contributions_, v. 14. art. 4) "palaeontology of the upper missouri, pt. 1, invertebrate." his valuable notes on indian dialects are in _the transactions of the american philosophical society_ (1862), in _the american journal of science_ (1862) and in _the proceedings of the american philosophical society_ (1869). with a. r. c. selwyn he wrote _north america_ (1883) for stanford's _compendium_.