Proceedings at the Meetings. 
323 
6. Some new Platinocyanides. By L. A. Levy, Clare College. 
(Communicated by Dr Fenton.) 
7. The resolution of salts of asymmetric nitrogen compounds and 
weak acids. By Miss A. Homer, ISTewnham College. (Communicated 
by Mr H. O. Jones.) 
8. A new coloured fluorescent hydrocarbon. By Miss A. Homer, 
Newnham College. (Communicated by Mr H. O. Jones.) 
9. Notes on the proportion of the sexes in dogs. By W. Heape, 
M.A., Trinity College. 
10. Preliminary note upon the presence of Phosphorus in Crystal- 
line Egg albumin. By Miss E. G. Willcock, Newnham College, and 
W. B. Hardy, M.A., Gonville and Caius College. 
11. The variation of the absorption bands of a crystal in a 
magnetic field. By W. M. Page, B.A., King’s College. (Communi- 
cated by Mr H. W. Richmond.) 
12. The natural units of Mass, Length, and Time. By H. C. 
Pocklington, M.A., St John’s College. 
May 6th, 1907. 
In the Optical Lecture Room. 
Dr Hobson, President, in the Chair. 
The following was elected a Fellow of the Society : 
W. A. H. Harding, B.A., Peterhouse. 
The following Communications were made : 
1. The spark-spectra of lead, tin, antimony, bismuth and gold, in 
a strong magnetic field. By J. E. Purvis, M.A., St John’s College. 
2. /3-rays from Potassium. By N. R. Campbell, M.A., Trinity 
College. 
3. The number of Electrons in an Atom. By N. R. Campbell, 
M.A., Trinity College. 
4. On the Longitudinal Impact of metal rods with rounded ends. 
By J. E. Sears, B.A., St John’s College. (Communicated by Professor 
Hopkinson.) 
5. Selective absorption of Rontgen Rays. By G. W. C. Kaye, 
Trinity College. (Communicated by Professor Thomson.) 
6. On the transmission of Earthquakes through the earth. (Second 
paper.) By Rev. O. Fisher, Jesus College. 
7. Note on the influence of extraneous forces upon the proportion 
of the sexes produced by Canaries. By W. IIeape, M.A., Trinity 
College. 
