482 Proceedings at the Meetings. 
February 23rd, 1914. 
In the Cavendish Laboratory. 
Proressor Sir J. J. THOMSON, IN THE CHAIR. 
The following Communications were made: ! 
1. (1) Determination of the effective aperture of the stop of 4 
photographic lens. 
| 
| 
(2) Experiments with a prism of small angle. 
By Dr G. F. C. Szarue, Peterhouse. 
29. On the Molecular Field in Diamagnetic Substances. (Pre-' 
liminary Note.) By A. E. Oxuey, B.A., Trinity College. 
3. The Superior and Inferior Indices of Permutations. ay Major’ 
P. A. MacManon. 
4. A Simplification of the logic of Relations. By N. WIENER. 
(Communicated by Mr G. H. Hardy. ) ! 
5. The Domains of steady motion for a liquid Ellipsoid, anal 
the oscillations of the Jacobian figure. By R. Harcreaves, M.A,,) 
St John’s College. | 
pe Oe See ————— — 
6. The oxygen content of the river Cam before and after re- 
ceiving the Cambridge sewage effluent. By J. E. Purvis, M.A., |) 
Corpus Christi College, and E. H. Brack. | 
March 9th, 1914. 
In the School of Agriculture. 
Dr SHIPLEY, PRESIDENT, IN THE CHAIR. 
The following were elected Fellows of the Society : 
P. C. Varrier Jones, M.A., St John’s College. ( 
H. W. Leatham, B.A., Trinity College. 
The following Communications were made: cm 
1. A Statistical Study of Feeding Trials with Oxen and Sheep. / 
By Professor Woop and G. Upny Yu ez, M.A., St John’s College. i 
2. Fluctuations of Sampling in Mendelian Ratios. By G. Upyy) 
Yue, M.A., St John’s College. . 
3. Inheritance in Brassice. By M. S. Purasz, B.A., Trinity 
College. (Communicated by Professor Biffen.) i 
