Table of Contents. 



Proceedings, ......... i 



Donations, ......... 2 



In Memoriara — Dr. Andrew Jackson Howe, • ■ • 3 



Weather, Water and Disease. By Dr. William Carson, 5 



North American Helicosporae. By A. P. Morgan, 39 

 Photographing Certain Natural Objects Without a 



Camera. By W. A. Kellerman, Ph. D., . • • 53 

 Variations and Intermediate Forms of Certain Asters, 



By W. C. Werner, 55 



Officers of the Society. 



President, T. B. Collier. 



First Vice-President, . . Dr. F. W. Langdon. 

 Second Vice-President, . . Dr. B. M. Ricketts. 



Secretary, T. H. Kelley. 



Treasurer, Davis. L. James. 



Members at Large of the Executioe Board. 



Geo. W. Harper, Dr. O. D. Norton, 



R. A. Holden, Jr., Charles Dury. 



Librarian. 

 Dr. M. Cassatt. 



Meetings. 



Regular Meeting of the Society. 



First Tuesday of each month, S p. m. 



Executive Board Meeting, 



First Tuesday of each month, 7 p. m. 



Photographic Section meets 



Second and Fourth Mondax-s, s p. m. 



Date of publication of this number, June 18, 1.S92. 



