93 



Skye, was mixed with a quantity of white material which resisted all the 

 ordinary acids, and he supposed was a silicate of magnesia ; at any rate it 

 gave a milky colour to the washings, and was so fine as not to subside in 

 any ordinary time. He wished to know how to proceed in such cases. 



Mr. Morland had found that alternate treatment with H 2 S0 4 , and liq. 

 potassae several times repeated was sometimes efficacious in getting rid of 

 refractory material. 



Mr. Karop said he was rather afraid of liq. potassse with diatoms, but Mr. 

 Morland was a great authority in this direction, and he was much indebted 

 to him for his suggestion. 



Announcements of meetings, &c, for the ensuing month were then made, 

 and the proceedings terminated in the usual Conversazione, and the follow- 

 ing objects were exhibited : — 



Alga, Yaticheria, sp. ... ... ... Mr. F. W. Andrew. 



Mouse Flea, Pulex musculi ... ... Mr. E. T. Browne. 



Plant Bug, Calocoris bipunctatus $ ... Mr. F. Enock. 



Organisms found in tube of a carbon filter,^ 



Protococcus, Diatoms Amoeba, Nematoid >■ Mr. G. E. Mainland, 

 worms, Infusoria, and Rotifer vulgaris ) 

 Moving bubbles in quartz ... ... Mr. E. M. Nelson. 



Young tadpole, showing cilia in tufts cover-") Mr Q Rougselet 

 ing the whole animal ... ... ) 



Serial set of sections through a young frog ... Mr. W. Watson. 



Attendance — Members, 46 ; Visitors, 4. 



