il4 PROCEEDINGS OP THE ACADEMY OF [1880. 



March 1st, 1880. — Injecting and Special Methods of mounting 

 Microscopical Objects, by Dr. Carl Seller. 



March 1st, 1880. — Observations upon Sponges, by Mr. John 

 Eyder. 



March 1st, 1880. — A Plan to show Opaque Objects with the Gas 

 Microscope, by Persifor Frazer. 



March 15th, 1880. — Lithological Studies with the Microscope, 

 by Persifor Frazer. 



April 5th, 1880.— Histological Studies, by Dr. Seller. 



April 19th, 1880. — Lantern Exhibition, by Mr. Holman and 

 Mr. Ryder. 



May .3d, 1880. — Communication upon Fresh-water Sponges, by 

 Mr. E. Potts. 



May llth, 1880. — Communication upon the Eggs of the matica, 

 by Mr. E. Potts. 



Sept. Gth, 1880.— Life Forms at Atlantic City, by Mr. E. Potts. 



Sept. 20th, 1880 — Communication upon the Larvis of King 

 Crabs, by Mr. E. Potts. 



Oct. 14th and 15th, 1880.— Annual Exhibition. 



Nov, 1st, 1880. — Report of the Committee on Exhibits and Im- 

 provements in Microscopical Science at the Annual Exhibition, 

 by Dr. Hunt. 



Nov. 15th, 1880. — Communication upon the Development of the 

 Pyrulla, by Mr. Charles Perot. 



The following Members and Associates were elected during the 

 year. 



Memhei's: — John C. Wilson, Otto Luthy, Howard Kelly. 

 Associates: — Dr. Joseph Simsohn, Dr. James A. McCoart, Dr. 

 Edward T. Bruen, Dr. John W. Gadsden, Dr. Monroe Bond, Dr. 

 J. H. Wills, 



RoBT. J. Hess, 



Recorder. 



REPORT OF THE CONCHOLOGICAL SECTION. 



The Recorder of the Conchological Section respectfully reports 

 that during 1880, Dr. R. Bergh, Dr. W. D. Hartman, and Mr. 

 Angelo Heilprin have presented papers upon the Mollusca, which 

 have been accepted and published in the Academy's Proceedings. 



