472 PROCEEDINGS OF THE ACADEMY OF [1894. 



plants ; those of Dr. Geo. A. Rex, on bacteria in the Myxomycetes ; 

 of Mr. Amos P. Brown, on hairs on Mentzelia, and Mr. Boyer's 

 description of a new form of diatom, named by him Rhahdonema 

 Woolmanii. 



At the joint meetings with the Academy the Section has always 

 been represented by its members, and important communications 

 have been made as follows : John A, Ryder, preparation of nervous 

 tissue, formation of brain convolutions; Geo. A. Rex, M. D. , Plas- 

 modium of Myxomycetes, Diachcea Thomasii ; Benjamin Sharj), 

 PhD., curious growth on a tree- root from San Salvador, fertiliza- 

 tion of plants in Hawaii; C. S. Boyer, on cyclosis ; Lewis Woolman, 

 remarks on diatoms; S. G. Dixon, M. D. , protection from tubercu- 

 losis; D. S. Holman, remarks on Myxomycetes; S. Trenner, exhibi- 

 tion of centrifugal machine; M. V. Ball, M. D. , remarks on tetanus 

 and the antitoxin, crystals formed by bacteria, skulls of criminals. 



The donations to the collection have been few : One slide of 

 barking sand, by Dr. Rex, and ten slides of histologic subjects by Mr. 

 Leedora Sharp. 



Five new names have been added to the list of members and con- 

 tributors. One death has been announced, and two members have 

 resigned, leaving the number of members and contributors sixty- four. 



The average attendance at the regular meetings was eight. 



The Treasurer's report shows a balance of $239.39 in the 

 treasury. 



Dr. Geo. A. Rex, the Conservator of the Section, reports as fol- 

 lows: — 



The property of the Section is in good condition. The microscopes 

 and accessory apparatus are in working order and have been freely 

 and frequently used at the stated meeting of the Section. 



No addition has been made to the apparatus during the year. 

 The slide collection is also in good order, but it is to be regretted 

 that but few additions have been made since the last report. 



Some inconvenience results from the crowded condition of our 

 cabinet, especially in the space devoted to the large binoculars and 

 the Leidy stands, but it is hoped that this will be remedied when 

 space in the new building is available. 



