18 JOURNAL OF THE [January, 



Meeting of October 17TH, 1884. 



The President, Mr. C. Van Brunt, in the chair. 



Thirty-seven persons present. 



Mr. John A. Chambers was elected an Active Member of the 

 Society. 



Dr. Antonio de Gordon y Acosta, of the University of Ha- 

 vana, Cuba, was elected an Associate Member. 



The following objects were exhibited : — 



Frond of Fern, stained, showing Sporangia and Spores : by 

 Edward G. Day. 



Group of Insect Eggs : by M. M. LeBrun. 



Elytron of Carabus : by E. A. Schultze. 



Elytron of Necrophorus mortuorum : by E. A. Schultze. 



Skin of Dogfish : by Walter H. Mead. 



Crystallized Natrolite, from Weehawken Tunnel : by G. F. 



KUNZ. 



Claihrocystis : by A. D. Balen. 



Organisms from Croton Water : by A. D. Balen. 



Multiple Images formed by the Eye of the Cockroach {Blaita 

 orientalis) : by J. D. Hyatt. 



Dr. Britton called attention to Dr. Waller's Report to the City 

 Board of Health, presented about five years ago, in which 

 Croton-water organisms are described. 



Mr. Hyatt stated that he had lately experimented with the 

 eyes of a variety of insects with the view of ascertaining their 

 comparative excellence for showing multiple images under the 

 microscope, and that he had found the eyes of the mosquito and 

 the cockroach to be the fittest for this purpose. 



Meeting of November 7TH, 1884. 



The President, Mr. C. Van Brunt, in the chair. 

 Forty-five persons present. 



Mr. Henry M. Dickinson was elected an Active Member of 

 the Society. 



The following objects were exhibited : — 



Stellate Hairs on leaf of Mallow : by Walter H. Mead. 



