508 
Proceedings at the Meetings. 
The names of the Benefactors were recited. 
The following was elected a Fellow of the Society : 
H. A. Wilson, B.A., Trinity College. 
The following were elected Associates of the Society : 
W. C. Baker, B.A. [Kingston], Non-Collegiate. 
V, J. Blyth, B.A. [Glasgow], Emmanuel College. 
J. A. Cunningham, B.A. [Dublin], St .John’s College. 
J. J. Durack, B.A. [Sydney], Trinity College. 
T. Lyman [Harvard University]. 
J. A. Patterson, B.A. [Toronto], Emmanuel College. 
R. S. Whipple was re-elected an associate for a second period 
of three years. 
The following Communications were made : 
1. Notes on Minerals from the Lengenbach Binnenthal. By 
R. H. Solly, M.A., Downing College. 
2. Some remarks on the notion of Number. By Dr E. W. Hobson, 
F.R.S., Christ’s College. 
3. The Hall Effect in Gases at Low Pressures. By^ H. A. Wilson, 
B.A., Trinity College. 
4. On some problems in Electric Convection. By G. T. Walker, 
M.A., Trinity College. 
5. On some phenomena connected with the combination of Hy- 
drogen and Chlorine under the influence of light. By P. Y. Bevan, 
B.A., Trinity College. 
November 1 \th, 1901. 
In the Optical Lecture Room. 
Mr W. Bateson, Vice-President, in the Chair. 
The following was elected an Associate of the Society : 
Mr Edwin Wilson. 
The following Communications were made : 
1. The Unit of Classification for Systematic Biology. By H. M. 
Bernard, M.A. (Communicated by Mr A. E. Shipley.) 
