246 
Proceedings at the Meetings. 
The following Communications were made : 
1. The ossification and varieties of the occipital bone. By Pro- 
fessor A. Macalister, St J ohn’s College. 
2. On the fifth book of Euclid’s Elements. By Dr M. J. M. Hill. 
3. Exhibition of Mr Graham Kerr’s method of reconstructing 
objects from thin sections. By J. S. Budgett, M.A., Trinity College. 
4. Note on the colour vision of the Eskimo. By W. H. R. Rivers, 
M.A., St John’s College. 
5. Note on the influence of external conditions on the spore- 
formation of Acrospeira (Berk, and Br.). By R. H. Biffen, B.A., 
Emmanuel College. 
6. On a reserve Carbohydrate which produces Mannose from the 
bulb of Lilium. By J. Parkin, M.A., Trinity College. 
7. Notes on new and interesting plants from the Malay Peninsula. 
By R. H. Yapp, B.A., Gonville and Caius College. 
8. The prevention of Malaria. By Dr J. W. W. Stephens. 
9. On the effect of a magnetic field on the resistance of thin 
metallic films. By J. Patterson, B.A. (communicated by Professor 
J. J. Thomson). 
10. On the theory of electric conduction through thin metallic 
films. By Professor J. J. Thomson. 
May 6th, 1901. 
In the Cavendish Laboratory. 
Professor Macalister, President, in the Ciiair. 
The following Communications were made : 
1. The oscillations of a Fluid in an annular trough. By B. Cook- 
son, B.A., Trinity College. 
2. Some Experiments upon Beams under endlong compression. 
By H. E. Wimperis, B.A., Gonville and Caius College. 
3. Note on the magnetic deflection of cathode rays. By H. A. 
Wilson, B.A., Trinity College. 
