c392.] NEW VORK MICROSCOPICAL SOCIETY. 91 



OBJECTS EXHIBITED. 



1. Navicula trinodis, from Ashbourne, Pa. 



2. Coscinodiscus excavatus, from artesian well at Beach Haven, 

 N. J. 



3. Triceratium (new species), from the same. 



Exhibits 1-3 prepared by Dr. C. Henry Kain and exhibited 

 by E. A. ScHULTZE. 



4. Wood fibre from coal. Deer Creek, Walker Co., Ala. 



5. Sporangia from the same. 



6. Macrospores from shale, Ontario, Canada. 



Exhibits 4-6 prepared by K. M. Cunningham and exhibited 

 bv Geo. E. Ashby. 



Meeting of March i8th, 1892. 

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

 Fourteen persons present. 



OBJECTS EXHIBITED. 



1. Serial sections of the fish, Atherina sp. (Silversides), 

 through the gills : by L. Riederer. 



2. Serial sections of the same, through the head : by L. 



E.IEDERER. 



3. Serial sections of the same, through the eye : by L. Rie- 

 derer. 



4. Malachite, from Arizona : by Geo. E. Ashby. 



5. Brucite, from Hoboken, N. J. : by Geo, E. Ashby. 



6. Sea-sand, mounted movable in fluid : by J. D. Hyatt. 



7. Fresh-water Diatoms, from Montgomery, Ala., prepared 

 in monobromideby Dr. Ward, of Poughkeepsie : by J. D. Hyatt. 



8. Pigeon-post film, used in the siege of Paris : by J. D. 

 Hyatt. 



9. Twenty-five Photomicrographs of various preparations: by 

 Frank D. Skeel. 



Meeting of April ist, 1892. 

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

 Forty persons present. 

 Dr. Carl Heitzmann addressed the Society on " Fallacy of the 



