1899.] NATURAL SCIENCES OF PHILADELPHIA. 541 



KEPORT ON THE WILLIAM S. YAUX COLLECTIONS. 



The Curator of the William S. Vaux Collections would respect- 

 fully report that a rough list of all the species in the collec- 

 tion, with the number of specimens iu each, has been prepared, and 

 that a fair copy of it is being transcribed in a book to be kept as 

 a catalogue. In addition to this, a large number of labels have 

 been corrected. The additions to the collection have numbered 

 but twenty-seven, but some of them are very tine specimens, 

 particularly two of barite, one of fluorite and one of rhodo- 

 chosite, said to be the finest ever found. 



A great deal more time than the present Curator' can possibly 

 give to it, ought to be spent upon this valuable collection to make 

 it as nearly perfect as possible. He desires to acknowledge the 

 valuable assistance of Mr. George Vaux, Jr., in the procuring of 

 specimens, and in advice, and of Mr S. Harbert Hamilton in the 

 cataloguing, etc. Respectfully submitted, 



Theodore D, Rand, 



Curator. 



REPORT OF THE BIOLOGICAL AND MICROSCOPICAL 

 SECTION. 



The Section has held ten meetings during the year with the usual 

 average attendance. 



A large Beck binocular microscope, with outfit of numerous 

 objectives and accessories, was received by bequest, for the use of 

 the Section, from the late Dr. Joseph J. Kirkbride. 



Numerous communications were made during the year, and the 

 following papers and communications were presented at the meet- 

 ings of the Academy: 



" Evolution of the Microscope," by Dr. J. Cheston Morris. 



" Diatomaoeous Deposits at the Mouth of Peusauken Creek," 

 by Messrs. Lewis Wool man and C. S. Boyer. 



" Nematode Worms," and " The Oyster Crab," by Dr. Ben- 

 jamin Sharp. 



" SeAvage Poisons," by Mr. Holman. 



" Parasites of the Oyster," by Mr. T. S. Parvin. 



" On the Structure of Diatoms," by Mr. T. C Palmer. 



