393 



poses was received from Prof. J. J. Stevenson, dated 314 

 West 30th Street, JST. Y., Feb. 15, 1877 ; and on motion the 

 request was granted. 



A letter requesting No. 73, 75 and 80 of the Proceedings 

 of the Society, and the loan of any cuts relating to the 

 subject of Indian sculptures in the possession of the 

 Society, to be used by him in his work on Indian Antiqui- 

 ties, was received from Mr. E. A. Barber, West Chester, Pa., 

 with references to Prof. T. C. Porter, of Easton. On motion 

 the Librarian was directed to correspond with Prof Porter, 

 and authorized to grant Mr. Barber's request. 



Letters of acknowledgment were received from the Rad- 

 cliffe Observatory, Feb. 12, 1877 ; and the Franklin Institute. 



A letter of envoy was received from C. P. Ob., St. Peters- 

 burg. 



Donations for the Library were received from J. J. A. 

 Worsaac, of Copenhagen ; Annales des Mines ; Revue Poli- 

 tique ; Geographical Society and Bureau des Longitudes, 

 Paris ; Royal Astronomical Society ; Victoria Institute and 

 London JS"ature ; Nova Scotia Institute at Halifax ; the 

 Editor of the Naturalist's Directory, Salem ; the A. Antiq. 

 Society, Worcester; American Chemist ; Index; Mr. Potts 

 of Camden, N. J.; Mr. Fred. Graff, Mr. Hermann Haupt, 

 and the Mercantile Library Co., of Philadelphia ; Commis- 

 sioners of Second Geological Survey of Pennsylvania ; U. S. 

 Corps of Engineers, and Public Library of Indianapolis. 



The death of Rear Admiral Davis at Washington, Feb. 

 25, 1877, aged years, was announced by the Secretary. 



Professor Sadtler communicated the results of his recent 

 gas analyses ; and Mr. Lesley described the importance of 

 the investigation in a geological sense, as the first ever pub- 

 lished which took into account the elements of depth hypso- 

 metrical, depth geological, order and age of the oil horizons, 

 and geographical distribution of the groups of wells in a 

 north and south direction from Pittsburgh to Buffalo. 



Professor Cope exhibited a vertebral column, thirty-three 

 feet long, of an unusually perfect Elasmosaurus, to which he 



