1910.] NATURAL SCIENCES OF PHILADELPHIA. 675 



expressive of the Academy's interest and appreciation. Delegates, 

 most of whom were in attendance at the meetings, were appointed 

 as follows: To the Third International Congress of Botany, Prof. 

 J. C. Arthur; to the Eleventh International Geological Congress, 

 Dr. Richard A. F. Penrose and Dr. Edgar T. Wherry; to the Eighth In- 

 ternational Zoological Congress, Prof. E. G. Conklin and Prof. Lndwig 

 v. Graff, and to the First International Congress of Entomology, Dr. 

 Henry Skinner. 



A rather larger number than usual of letters requesting information 

 or assistance were either answered by the Corresponding Secretary 

 or referred to other officers of the Academy. 



A tabulated statement of the correspondence for the year follows: 



Communications Received. 



Acknowledging receipt of the Academy's publications 223 



Transmitting publications to the Academy 56 



Requesting exchanges or the supply of deficiencies 11 



Invitations to learned gatherings 14 



Notices of deaths of scientific men 6 



Circulars concerning the administration of scientific institutions, etc 19 



Biographies and photographs of correspondents 3 



Miscellaneous letters 92 



Total received 424 



Communications Forwarded. 



Acknowledging gifts to the Library 1,0S4 



Acknowledging gifts to the Museum 59 



Acknowledging photographs and biographies 3 



Requesting the supply of deficiencies in periodicals 67 



Letters of sympathy and congratulation, etc 4 



Miscellaneous letters 89 



Diplomas and notices of election of correspondents and delegates 6 



Annual Reports and other publications sent to correspondents 424 



Circular letters 91 



Total forwarded 1,827 



Respectfully submitted, 



J. Percy Moore, 

 Corresponding Secretary. 



