appendix b: biographical sketches. ()99 



Hall, James. Clergyman. 



Born in Carlisle, Pa., August 22, 1744; died in Bethany, N. C, July 25, 1826. 

 Graduated from Princeton University in 1774. Maintained at his home in North 

 Carolina an '.'academy of sciences," in which he was the only teacher. 

 Harlan, Richard. Physician and paleontologist. 



Born in Philadelphia, Pa., September 19, 1796; died in New Orleans, La., Sep- 

 tember 30, 1843. 

 Harper, LEwrs (Ludwig Hafner). 



Of Hamburg, Germany. In 1855-1857, professor of geology and agriculture and 

 State geologist of Mississippi. 

 Hartt, Charles Frederick. Geologist. 



Born in Fredericton, New Brunswick, August 23, 1840; died in Rio Janeiro, Brazil, 

 March 18, 1878. In 1864, connected with geological survey of New Brunswick. In 

 1865-1866, geologist on the Thayer Expedition to Brazil. In 1868, appointed professor 

 of natural history in Vassar College, but resigned shortly to accept chair of geology 

 in Cornell University, which he held until time of his death. In 1875, appointed 

 chief of the geological commission of Brazil. 



Biogr. G. F. Matthew. Bull. Nat. Hist. Soe. of N. B., IX, 1S90, pp. 1-24. 

 Hawn, Frederick. Civil engineer. 



Born in Herkimer County, N. Y., January 5, 1810; died in Leavenworth, Kans., 

 January 31, 1898. About 1851 appointed by Swallow assistant on Missouri geological 

 survey, and gave particular attention to study of the coal regions. Is best known in 

 connection with the discovery of the Permian formation in Kansas. 



Biogr. G. C. Broadhead. Am. Geol., XXI, 1898, pp. 267-69. 

 Hay, Robert. Geologist. 



Born of Scottish ancestors, May, 1835, in Lancashire, England; died in Junction 

 City, Kans., December 14, 1895. Came to America in 1871, and for ten years taught 

 in the public schools. In 1881 appointed State geologist of Kansas. In 1890 geolo- 

 gist in charge of the artesian investigation of the Great Plains under Department of 

 Agriculture. During last five years of his life connected with U. S. Geological Survey 

 in special work on underground waters of Kansas. His papers were about thirty, 

 principally upon geology. 



Biogr. Robt. T. Hill. Bull. Geol. Soe. Amer., VIII, 1896, pp. 370-74. 



Hayden, Ferdinand Vandiveer. Geologist. 



Born in Westfield, Mass., September 7, 1829; died in Philadelphia, Pa., December 

 22, 1887. Graduated from Oberlin College in 1850. Assistant to James Hall in 1853; 

 engaged in independent geological work in the West, 1854-1856. Geologist to the 

 Warren Expedition to the Yellowstone region in 1856 and to the Black Hills in 1857. 

 In 1858, with Meek, engaged in explorations in Kansas. In 1859, appointed surgeon 

 and naturalist to exploring party under Capt. W. F. Raynolds about the headwaters 

 of the Missouri. In 1865-1872, professor of geology and mineralogy in University 

 of Pennsylvania. In 1869, appointed United States geologist in charge of survey of 

 Nebraska, and in 1868 to similar position in Wyoming. In 1869-1879, Director U S. 

 Geological and Geographical Surveys, and from 1880-1886, geologist on United States 

 geological surveys under J. W. Powell. 



Biogr. C. A. White. Mem. Nat. Acad. Sci., November, 1894. 



Hayden, Horace H. 



Born in Windsor, Conn., October 13, 1768; died in Baltimore, Md., January 26, 

 1844. Trained for profession of architect, and subsequently became practicing den- 

 tist. His chief claims to geological recognition lies in his authorship of geological 

 essays published in 1820 and two papers on local geology. 

 Biogr. Amer. Journal Dental Sciences, IV, No. 1. 1844. 



