304 Proceedings at the Meetings. 
The following Communications were made: 
1. The ten Stereoisomeric Tetrahydroquinaldinomethylenecam- 
phors. By Professor Pope and Mr J. Reap. 
2. The chemical and bacterial condition of the Cam above and 
below the sewage effluent outfall. By J. E. Purvis, M.A., St John’s 
College and A. E. Rayner, M.A., Gonville and Caius College. 
3. Some experiments on the slow combustion of Coal Dust. By — 
F. E. E. Lampniovuenu, M.A., Trinity College and Miss A. M. Hitt. 
4. The Oxidation of Ferrous Salts. By F. R. Ennos, BA., 
St John’s College. (Communicated by Mr C. T. Heycock.) 
5. On the optically active semicarbazone and _ benzoylphenyl- 
hydrazone of cyclo-hexanone-4-carboxylic acid. By W. H. Mutts, 
M.A., Jesus College and Miss A. M. Barn. 
6. Experiments illustrating “ Flare Spots” in Photography. By 
Dr G. F. C. Stare, Peterhouse. 
7. Note on the effect of heating Paraformaldehyde with a trace of 
sulphuric acid. By P. G. M. Dunuop, M.A., Gonville and Caius College. 
April 28th, 1913. 
In the Botanical Laboratory. 
Dr SHIPLEY, PRESIDENT, IN THE CHAIR. 
The following were elected Fellows of the Society : 
R. H. Peters, B.A., Gonville and Caius College. 
C. M. Sleeman, M.A., Queens’ College. 
The following were elected Associates : 
C. G. L. Wolffe, M.D. (McGill University). . 
J. Burtt-Davy, Non-Coll. 
The following Communications were made : 
1. \Notes on additions to the Flora of Cambridgeshire. By A. H. 
Evans, M.A., Clare College. 
2. On some new and rare Jurassic plants from Yorkshire. By 
H. Hamsuaw Tuomas, M.A., Downing College. 
3. Some Varieties of Plants new to the British Isles. By C. E. 
Moss, B.A., Emmanuel College. 
