1878.) 311 
Prof. Cope exhibited a roughly mounted fossil under jaw 
of a large extinct mammal obtained by himself in Colorado, 
in 1878, and described its peculiarities and classical value, 
as well as the difficult circumstances in which it was 
secured. 
Pending nominations Nos. 852 and 853 were read, and 
the meeting was adjourned. 
Stated Meeting, Feb. 15, 1878. 
Present, 14 members. 
Vice-President, Mr. Fra.ery, in the Chair. 
Letters of acknowledgment were received from the R. So- 
ciety at Upsal, Oct. 15 (96, 98); Phys. Society, Berlin, June 
3, “717 (92 to 95, and XV, ii); R. Ll. Academy, Vienna, Feb. 
22, 717 (92 to 95 and 97); Nat. Hist. Society at Emden, Nov. 
7, 717 (92, 92, 96 to 99); Royal Society, London (99). 
Letters of envoy were received from the Central Observa- 
tory at St. Petersburg, Jan., 1878; Royal Society at Upsal, 
Oct. 15, 1877; Physical Society, Berlin, June 3, 77; Royal 
Academy, Vienna, Aug. 7, "77; Swiss Society at Berne, Sept., 
"77; Meteorological Office, London, Jan., 1878; and the 
Office of the Chief of U.S. Engineers, Washington, D. C., 
Feb. 11, 1878. 
Donations for the library were received from the Academies 
at Vienna, Berlin and Brussels; the Royal Society of New 
South Wales ; Physical Observatory, at St. Petersburg; Royal 
Societies at Upsal, Copenhagen and London; M. Joachim 
Barrande of Prag; Dr. Giebel of Halle; Physical Society 
at Berlin; Societies at Emden, Gorlitz, Ulm, St. Gall, and 
Basel; M. Henri de Saussure ; the Geographical Society and 
Revue Politique, at Paris; the Commercial Geographical 
Society of Bordeaux; the Linnean and Astronomical Socie- 
ties, Victoria Institute, Society of Arts, and London Na- 
ture; the Royal Observatory at Greenwich ; the Lords of 
Admiralty ; Dr. Humphrey Lloyd; Nova Scotia Institute, 
at Halifax; Franklin Institute, Penn Monthly, College of 
Pharmacy, Medical News; Smithsonian Institution ; Chief 
