329 



covery that the appearance was really dne to the waved outline of a 

 dorsal appendage. He also drew on the board the figure of a human sper- 

 matozoon, showing a remarkable " nick," which, on examination with the 

 highest powers, he had found to be always present a short distance from the 

 commencement of the tail. 



Mr. Karop thought it just possible that though this was seen in mounted 

 specimens it might not be present in fresh living specimens. 



Mr. Stokes inquired if it showed in specimens which had been wetted 

 and then dried again ? 



Mr. Nelson said the specimens examined had been either dry or mounted 

 in glycerine ; he had not seen any stained specimens. 



Mr. Curties said it was so common for slides of these objects to be dis- 

 tributed mounted dry that he was surprised that the observation had not 

 been made before. 



Mr. Karop said that anyone who had the opportunity of double staining 

 would find a very good object in the testicle of the newt ; sections of which 

 might be prepared with methyl green and logwood — the methyl green had 

 a special affinity for the heads of the Spermatozoa, and showed them very 

 plainly in situ. 



The President said that some enquiries were made occasionally for large 

 winged seeds for mounting ; he had therefore brought some specimens of 

 the seeds of Bignonia Indica, the wings of which showed structure under 

 the microscope. The specimens were placed upon the table for dis- 

 tribution. 



Announcements of meetings, &c, were then made, and the meeting 

 terminated with the usual conversazione, when the following objects were 

 exhibited : — 



Cordylopora lacustris ... Mr. F. W. Andrew. 



Dichroic Crystals of Platino-cyanide of) 



Yttrium | Mr. H. E. Gregory. 



Steplianocerus Eichhomii and Vorticellce ... Mr. W. Hain worth. 



Dermanyssus avium (Bird Mite) Mr. Mainland. 



Living Nymphs of Tegeocranus latus ... ... Mr. A. D. Michael. 



Young Spider (Ejriera diadema) Mr. J. Offord. 



Horned Aphis (Cerataphis lantarice) Mr. F. A. Parsons. 



Fiterite— Giimbelberg, Moravia Mr. G. Smith. 



Syenite — Malvern Hill „ 



Diatoms (Actinoptychus jpellucidus) ... ... Mr. G. Sturt. 



Attendance — Members, 67 ; Visitors, 4. 



