436 



Presents. 



[Dec. 17, 



of a second. The period of vibration of such a drop was calculated 

 to be -jjrj- of a second. 



The effect of diminishing the tension would be to increase the 

 period of vibration. In experiment we have observed that the separa- 

 tion of the maxima is much greater in the cases of paraffin and of 

 turpentine and of alcohol. But difficulties were experienced in the 

 fact that drops of these liquids when let fall from small heights up 

 to about half an inch, generally assumed the spheroidal state. Equal 

 drops of water and of weak oleate of soda solution were let fall into 

 water, and it was found that the separation of maxima was nearly 

 twice as great for the oleate as for the pure water. 



In the case of large drops, drops let fall from a point midway 

 between the points to which maxima correspond are nearly always 

 broken up without the formation of a ring. In the case of small 

 drops rings are nearly always formed, but the depth of their paths in 

 the liquid varies from about half an inch to 5 inches. 



VI. " A Preliminary Account of a .Research into the Nature of 

 the Venom of the Indian Cobra (Naja tripudians). By 

 R. Norms Wolfe nden, M.D. Cantab, (from the Physio- 

 logical Laboratory, University College, London). Commu- 

 nicated by E. A. Schafer, F.B.S. Received November 17, 

 1885. 



The Society adjourned over the Christmas Recess to Thursday, 

 January 7th, 1886. 



Presents, December 10, 1885. 



Transactions. 



Adelaide : — Royal Society of South Australia. Report. Vol. VII. 

 8vo. Adelaide 1885. The Society. 



Baltimore :— Johns Hopkins University. Studies from the Bio- 

 logical Laboratory. Vol. III. Nos. 3-4. 8vo. Baltimore 1885. 

 Studies (Third Series), V-X. 8vo. Baltimore 1885. 



The University. 



Bern : — Naturforschende Gesellschaf t. Mittheilungen. 1883. 



Heft 2. 1884. Hefte 1-2. 8vo. Bern 1884. The Society. 



Birmingham : — Philosophical Society. Proceedings. Vol. IV. 



Part 2. 8vo. Birmingham 1885. The Society. 



Brisbane : — Royal Society. Proceedings. Vol. I. Parts 2-4. 8vo. 



Brisbane 1884-85. The Society. 



