l893-] NEW-YORK MICROSCOPICAL SOCIETY. 115 



smallest species, the intermediate, and the largest discs. And the 

 following genera are represented by from two to ten or more 

 species each : Ac/inanthes, Amphora, Amphiprora, Actinocydus, 

 Actinoptychus , Cocconeis, Cyclotella, Coscinodtscus, Campylodiscus, 

 Cymbella, Epethemta, Eunotia, Gomphonema^ Melostra, Nitzschiay 

 Navicula, Odontidium, Pleurosigtna, Steuroneis, Surirella, Synedra, 

 Terpsinoe, Tabeilaria, the Naviculae, however, being in the major- 

 ity. In the observations of the living diatoms detailed herein I 

 used a Zeiss D lens and at a magnification of about 600 diameters. 



PROCEEDINGS. 

 Meeting of April 7TH, 1893. 



The President, Mr. Charles S. Shultz, in the chair. 



Twelve persons present. 



Mr. Noah Palmer was elected a Resident Member of the So- 

 ciety. 



Dr. Samuel Lockwood, who was expected to deliver the ad- 

 dress announced on the programme, was by illness prevented 

 from attendance. An informal session was held. 



Annual Exhibition, April 19TH, 1893. 



The Fourteenth Annual Exhibition of the Society was held 

 at the American Museum of Natural History, Central Park, 

 New York City, on the evening of April 19th, 1893. 



Objects and apparatus, as noted in the programme below, 

 were displayed in the large hall on the first floor of the Mu- 

 seum. At 9 o'clock Rev. E. C. Bolles, D.D., in the Lecture 

 Room adjoining, gave an explanation of the projection of nu- 

 merous microscopic objects on the screen. 



PROGRAMME. 



1. Water Wood-louse, ^j^//«j aquattcus, showing the circula- 

 tion of the colorless blood: by H. C. Bennett. 



2. Section of Human Scalp, showing hair follicles, sebaceous 

 glands, and ducts : by H. C. Bennett. 



3. Transverse Section of a Cat's Tongue : by Wm. Wales. 



