80 JOURNAL OF THE [May, 



discovered diatom, obtained from material from Barbadoes, and 

 which had been named Plagiograiiima validum by Prof. H. L. 

 Smith. 



HIGH-REFRACTIVE MEDIA. 



Prof. H. L. Smith's paper on " High-Refractive Media" was 

 read by Mr. Van Brunt {_Supra, page 75). 



Mr. Van Brunt : " Professor Smith's experiments have been 

 very extensive, and the formulce given by him are the result of 

 a vast deal of labor, and he should be thanked for his experi- 

 ments. I have obtained some curious results in repeating these 

 experiments of Prof. Smith, which I would like to present at a 

 future meeting. 



" Prof. Smith has been trying to discover a medium in which 

 diatoms maybe mounted so as to show their structure under the 

 most favorable conditions, and I tiiink he will eventually 

 succeed." 



The Corresponding Secretary announced that the Society had 

 been invited by the Torrey Botanical Club to attend a lecture 

 to be delivered by Prof. W. G. Farlow, of Cimbridge, Mass., 

 before the Club, on the gth instant, at Columbia College, on the 

 subject of " Fungous Diseases of Plants." 



On motion, the Corresponding Secretary was instructed to 

 convey the thanks of the Society to the Torrey Botanical Club 

 for the invitation. 



Mr H L. Brevoort was appointed a special committee on 

 Textile Fibres. 



Meeting of April .i6th, 1886. 

 The President, the Rev. J. L. Zabriskie, in the chair. 

 Thirty-one persons present. 



objects exhibited. 



1. ffaplophruiri/nuin cassis, Parker's Sp., from Portland Harbor, 

 Maine : by A. Woodward. 



2. Scalariform Ducts in the Tree- Fern Dicksonia antarctica : 

 by C. S. Shultz. 



3. Section of Cat's Tongue : by C. S. Shultz. 



4. Bacillus tulferci/losis : by W. H. Bates, M. D. 



5. V\\oio\mcxQQ^xa.^\\ o{ JSacilli/s tuberculosis : by W. H. Bates, 

 M. D. 



