Additions to the Library. 209 



Written Communications. 

 Special attention is requested to this department. Valuable 

 scientific communications are often given in letters which never 

 appear in print, and unless such letters are preserved, the informa- 

 tion may be lost. Persons having letters and manuscripts of scien- 

 tific value which they are willing should be placed on file, are 

 respectfully invited to send such communications to the library of 

 this Society. 

 E. F. Crooks. On Belding Bros.' Artesian Well. Presented by 



Dr. O. D. Norton. 

 Charles Dury. Notes on Mississippi Snapper. 

 Prof. Joseph F. James. On Oxford Gas Well. 

 Prof. A. P. Morgan. On Sullivant's Book of Mosses. Presented 



by Davis L. James. 

 Prof. Edward Orton. On Trenton Formation at Cincinnati. 

 H. T. Patton. On Wild Oats. From Dr. O. D. Norton. 



