1907.] 
NATURAL SCIENCES OF PHILADELPHIA. 
565 
Eight resignations of membership have been received as follows: 
Judson Daland, W. P. Stokes, George M. Woodward, Marian G. Nimlet, 
Lightner Witmer, L. H. Carpenter, R. D. Barclay, and Henry Emer- 
son Wetherill. 
Although the improved design for the Hayden Memorial Medal was 
accepted in 1906, as stated in my last annual report, the engraved 
dies were not received from the Gorham Company until last April. 
The medal, the work of John Flanagan, of New York, was then cast 
by Messrs. Krider & Co., of Philadelphia, and has met with general 
approval, the portrait and the emblematic reverse being regarded as 
improvements on the design of the token formerly awarded. The 
Academy has been forced by a variety of circumstances to defer the 
actual presentation of the medal to Dr. Wolcott until the first meeting 
of January, when a reception will be tendered the distinguished 
recipient. 
The President was authorized to appoint representatives to the 
Centenary Celebration of the Geological Society of London, and to the 
observance of the two hundredth anniversary of the birthday of 
Linnaeus by the New York Academy of Sciences. 
Edward J. Nolan, 
Recording Secretary. 
REPORT OF THE CORRESPONDING SECRETARY. 
The Corresponding Secretary regrets the necessity of recording the 
death during the past year of the following named correspondents: 
Mr. Frederick C. Stearns, Sir Joseph Fayrer, Prof. Edmund von 
Mojsisovics, and Prof. Lucien M. Underwood. There were elected Mr. 
P. Chalmers Mitchell, of the Zoological Society of London; Prof. J. W. 
van Wijhe, of the University of Groningen; Prof. Otto zur Strassen, of 
the University of Leipzig, and Dr. R. Bowdler Sharpe, of the British 
Museum. 
Notices announcing the deaths of five scientific men of prominence 
were received and suitably acknowledged on behalf of the Academy. 
Upon the receipt of official invitations delegates representing the 
Academy were appointed by the President as follows: To the Tri- 
centennial Anniversary of the birth of Ulisus Aldrovandi, Prof. Gio- 
vanni Capellini, a correspondent; to the Seventh International Zoo- 
logical Congress, Prof. E. G. Conklin, Dr. Henry A. Pilsbry Dr. 
