ISqO.] NEW-YORK MICROSCOPICAL S0CIP:TY. 115 



PROCEEDINGS. 

 Meeting of April i8th, 1890. 



The President, Mr. P. H. Dudley, in the chair. 



Thirty-eight persons present. 



Mr. L. Riederer read by title a Paper, entitled " Notes on 

 Staining Sections made by the Paraffin-Process enclosed in a 

 film of Collodion." This Paper is published in the present 

 volume of the Journal, p. 88. 



The six low-power objectives, announced at the last meeting 

 as purchased for the use of the Society, were placed in the care 

 of the Curator, and the Committee on this matter was 

 discharged. 



Dr. Frank D. Skeel exhibited a one-inch objective of his own 

 grinding and mounting, and explained some points of interest in 

 the combination. It is a triplet, the central glass, crown, with 

 a radius of .41 inch, and the two outer glasses, flint, with radii 

 of .80 inch. The combination gives good working distance, 

 plenty of light, and good definition, and would be very useful 

 for dissecting purposes. The skill and success of Dr. Skeel 

 shown in the manufacture of this objective were commended by 

 Mr. William Wales. 



The Paper announced on the programme for the evening, and 

 entitled " The Long Island Oyster " was read by Dr. Bashford 

 Dean. This Paper was illustrated by black-board drawings, and 

 by a large collection of interesting specimens. A discussion 

 followed, participated in by Messrs. F. W. Devoe and F. W. 

 Leggett, and Dr. Paul Hoffman. 



Meeting of May 2nd, 1890. 



The President, Mr. P. H. Dudley, in the chair. 

 In the absence of the Secretary, Mr. George E. Ashby was 

 elected Secretary pro tern. 



OBJECTS exhibited. 



I. Microscope stand and objectives, used by the late Dr. 

 J. W. Draper in taking photomicrographs, and also specimens 

 of these photomicrographs on daguerreotype plates ; loaned 

 for the occasion by his son. Dr. Daniel Draper : by P. H. 

 Dudley. 



