387 



usual salt was a synthetic body, and to mount with it success- 

 fully they must find its absolute melting point, and must drive 

 off the whole of the water of crystallization. If there was any 

 moisture in the air when the mounting was done it would 

 recombine and crystallize again, but if done in a dry oven it 

 would generally succeed. If, however, there was the faintest 

 trace of water crystals would be sure to form in it. 



The President then read a note " On Some Minute Forms of 

 Pond Life." 



Announcements of meetings for the ensuing month were then 

 made, and the proceedings terminated with the usual conver- 

 sazione, at which the following objects were exhibited: — 

 BMzosolenia rohusta, large size, -g^^ inch Mr. J. G. Grenfell. 

 Euchlanis lyra, mounted ... ... Mr. C. F. Rousselet. 



February 2nd, 1894.— Conversational Meeting. 



The following objects were exhibited : — 

 Thalassiosira Nordejishioldii, exhibit- "^ 



ing a membrane connecting the ' 



frustules which is destroyed by \ ^''' *^- ^' G^^enfell. 



acid or burning ... ... J 



Aphides in an apple core Mr. G. E. Mainland. 



StylobibliumJajponicuvi, from. J a^panese ") m TT M i 



lignite ... ... ... ...)'* 



Siliceous and Calcareous Sponges ... Mr. B. W. Priest. 

 Lophopus crystallinus (mounted) ... Mr. C. F. Rousselet. 



February 16th, 1894. — Annual Meeting. 



E. M. Nelson, Esq., F.R.M.S., President, in the Chair. 



The minutes of the preceding meeting were read and con- 

 firmed. 



Mr. Edward Praill and Mr. Harry Wade were balloted for, 

 and duly elected members of the Club. 



The following donations were announced : — 

 " Proceedings of the Belgian MicroO ^^ ^^^ g 

 scopical Society ... ... ) •^ 



"Annals of Natural History .0. ... Purchased. 



