1890.] NATURAL SCIENCES OF PHILADELPHIA. 39 



ographs of the Graptolites of the Quebec group (1865) ; two vol- 

 umes of the geology and paleontology of Iowa (1858-9) ; the chap- 

 tei's on geography, geology and paleontology, of Wisconsin in 1862 ; 

 Fremont's exploring expedition Appendix A. (1845) ; Expedition 

 to the Great Salt Lake (1852) ; United States and Mexican Bound- 

 ary Survey (1857) ; United States Geological Exploration of the 

 Fortieth Parallel, Vol. IV. He has published volumes of reports of 

 progress ever since 1866, when on the reorganization of the New York 

 State Museum he was appointed director as well as State Geologist. 

 Notable among these are Vol. VI, on the Corals and Bryozoa from the 

 Lower and Upper Helderberg and Hamilton ; Vol. VJI, containing 

 descriptions of the trilobites and other Crustacea of the Oriskany, 

 Upper Helderberg, Hamilton, Portage, Chemung and Catskill — in 

 fact eleven volumes altogether. He received the grand cross of the 

 order of St. Maurice and St. Lazarus from the King of Italy in 1882, 

 -and the Walker quinquennial grand prize of $1000 from the Boston 

 Society of Natural History in 1884. 



He is the only surviving founder of the American Association of 

 ■Geologists which was organized in Philadelphia in 1840, and out of 

 which grew the American Association for the Advancement of 

 Science. He was one of the charter members of the National 

 Academy of Science, and one of the original founders of the Inter- 

 national Congress of Geologists, at all sessions of the latter of which 

 he has attended having been elected Vice-President representing 

 the United States. 



He was elected a Correspondent of the Academy of Natural 

 Sciences of Philadelphia in 1843, one of the foreign members of the 

 Geological Society of London in 1848, and received its AVollaston 

 medal in 1858. He was elected Correspondent of the Academy 

 of Sciences of Paris in 1884. He was the first President elected by 

 the Geological Society of America on its organization in 1889. 



Probably no one living has influenced to a greater extent the do- 

 main of invertebrate palaeontology, and much of the exactitude of 

 knowledge which his researches have introduced into the New York 

 reports have made these the standard of geological nomenclature 



and classification throughout x\merica. 



Joseph Leidy. 



J, P. Lesley. 



Angelo Heilprin. 



Persifor Frazer. 



William B. Scott. 



