1884.] NATURAL SCIENCES OF PHILADELPHIA. 32t 



It being the duty of the Corresponding Secretary to 

 acknowledge all gifts to the Museum, the usual circulars have 

 been signed, and the Curator-in-charge, to whom tlie addresses 

 are generally known, has sent them to the donors. A full 

 account of the donations will appear in the Curator's report. 



During the year ending November 30, there have been twenty- 

 two correspondents elected, to all of whom notification has been 

 promptly forwarded, and, excepting to those very recently 

 elected, the diploma has also been sent. Of the correspondents 

 elected during the present and past j^ear, seventeen have 

 acknowledged their election, many having at the same time 

 transmitted valuable publications. 



Official notification has been received of the death of Joachim 

 Barrande, Quintino Sella and Sven Nilsson, correspondents. 



While the number of letters from societies, etc., does not indi- 

 cate the entire number receiving our publications, it may be inter- 

 esting to note that nineteen are from societies, libraries, etc., in 

 North America and Mexico, two from South America, and fifty- 

 three from the Eastern Hemisphere. The entire number of 

 letters, announcing the receipt of our publications, during the 

 year is one hundred and nineteen. 



Letters of transmission, with which foreign societies usually 

 accompany their publications, have diminished during the year, 

 owing probably to the transmission of the publications by mail. 

 These letters number forty-four. 



The activity of our Librarian, in endeavoring to supply defi- 

 ciencies in our library, usually induces a corresponding demand 

 on us from our corresponding societies. Letters of this 

 character are noted to the number of nine. 



Letters of a miscellaneous nature — in response to our invita- 

 tion to exchange by mail, regarding deficiencies for which we 

 have applied, announcing anniversary festivities — have been 

 received from foreign societies, numbering nineteen. 



In addition to the above, a considerable number of trivial 

 letters have been received, and, where necessar}'', replied to, 

 mostly entirel}' unimportant, and often of a purely personal nature. 

 Respectfully submitted, 



Geo. H. Horn, M. D., 



Corresponding Secretary. 



