1892.] NEW-YORK MICROSCOPICAL SOCIETY. 51 



PROCEEDINGS. 

 Meeting of December 4Th, 1891. 



The Vice-President, Mr. J. D. Hyatt, in the chair. 



Seventeen persons present. 



Messrs. Stephen Helm and Alfred Kroger were elected Resi- 

 dent Members. 



Mr. Walter H. Mead, chairman of the Committee on Nomina- 

 tion of Officers, presented the report of the Committee, nomi- 

 nating officers for the coming year. 



The Corresponding Secretary read a communication from Mr. 

 G. R. Lumsden, of Greenville, Conn., donating to the Society a 

 packet of diatomaceous material from a peat bog at Amherst, 

 Nova Scotia. 



On motion the thanks of the Society were tendered Mr. 

 Lumsden for this donation. 



Dr. N. L. Britton read a paper entitled " The North Ameri- 

 can Species of the genus Scirpus." This paper was illustrated 

 by many herbarium specimens, and the fruit of two species 

 under microscopes, as noticed in the programme. 



Mr. Stephen Helm read a paper entitled " Cordylopho7-a lacus- 

 tris and five new forms of Animal Life." This paper was illus- 

 trated by original drawings and by objects under microscopes, 

 and is published in this number of the Journal, p. 43. 



OBJECTS EXHIBITED. 



1. Head of the Spider, Attus tripunctatus Hentz, female, show- 

 ing the eight eyes, palpi, falces, and fangs : by J. L. Zabriskie. 



2. Section of an Ammonite from Wurtemberg, Germany, be- 

 ing a cast composed of iron pyrites : by J. D. Hyatt. 



3. Section of Agate, regular greenish aggregations covered 

 with a dense pubescence : by J. D. Hyatt. 



4. " Slug-form " of aquatic life, designated as " No. i " : by 

 James Walker for Stephen Helm. 



5. Cordylophora coronata n. sp., from the Morris & Essex 

 Canal : by Stephen Helm. 



