300 



from Mr. Craig Biddle, dated 2033 Pine Street, Feb. 6, 1877; 

 from Dr. Geo. Strawbridge, dated 1616 Chestnut Street. Feb. 

 7, 1877 ; from Mr. Henry Pliillips, Jr., dated 304 S. Eleventh 

 Street, Feb. 11,1877; from Mr. M. Russell Thayer, dated 

 Chestnut Hill, Feb. 8, 1877; from Prof T. F. .Crane, dated 

 Cornell University, Ithaca, Feb. 8, 1877 ; from Dr. Charles 

 VV. Shields, dated IVinceton College, Feb. 8, 1877 ; from Mr. 

 George Stuart, dated 1528 N. Eighteenth Street, Feb. 12, 

 1877 ; from Dr. Thomas Goodell, dated Preston Retreat, 

 Twentieth and Hamilton, Feb. 13, 1877; from Mr. W. V. 

 Mc.Kean, dated [Ledger Office], Feb. 16, 1877; from Dr. J. 

 U. McQuillen, dated'2100 Arch Street, Feb. 12, 1877. 



Letters of acknowledgment were received from the Uni- 

 versity of Toronto (96, 98) ; and the Boston Public Library 

 (96). 



Donations for the Library were received from the Society 

 at Lille ; Revue Politique ; London Nature ; Essex Institute ; 

 American Chemist; Mr. A. R. (J rote, Butfalo ; Franklin 

 Institute ; Penn Monthly ; American Journal of Pharmacy ; 

 Medical News and Library ; House of Refuge ; and Reading- 

 Railroad ; Mr. Leo Lesquereux ; War Department, U. S.; 

 the Commissioner of Education, Washington ; Mr. Sam. 

 Scudder; Dr. Robert Peter; and the Mercantile L. Associa- 

 tion, San Francisco, California. 



The death of Dr. Anderson was announced by the Secre- 

 tary, on authority of information received from Columbia 

 College. 



The death of Dr. Elisha J. Lewis, February 10th, 1877, at 

 Philadelphia, aged years, was announced by Mr. J. S. 

 Price. 



The Secretary read a communication from Mr. Alex. E. 

 Outerhridge, Jr., entitled '• On the wonderful divisibility of 

 metallic gold," giving a short description of an experiment 

 made in the Assay office of the U. S. Mint, at Philadelphia. 



Mr. Outerbridge electrotyped ;i film of gold upon a coppei-plate, the 

 difference of weight before and after the process, in two trials, showing 

 the weight of gold deposited to be t-lO of a grain, over a surface of two 



