Proceedings at the Meetings. 295 



February 22nd, 1909. 



In the Optical Lecture Room. 



Professor Sedgwick, President, in the Chair. 



The following were elected Fellows of the Society : 



J. A. Crowther, B.A., St John's College. 



H. H. Paine, B.A., Trinity College. 



F. Shillington Scales, M.A., Jesus College. 



The following Communications were made : 



1. On the alleged influence of lecithin on the determination of 

 sex in rabbits. By R. C. Punnett, M.A., Gonville and Caius College. 



2. Observations on the Changes in the Common Shore Crab 

 caused by Sacculina. By F. A. Potts, M.A., Trinity Hall. 



3. On a so-called " sexual " method of forming spores in Bacteria. 

 By 0. C. DoBELL, B.A, Trinity College. 



4. On the migration of the thread cells of Moerisia. By C. L. 

 BouLENGBR, B.A., King's College, 



5. A note on a specimen of Pelagothuria from the Seychelles. 

 By J. C. Simpson. (Communicated by Professor Sedgwick.) 



6. The Study of Discontinuous Phenomena. By N. R. Campbell, 

 M.A., Trinity College. 



March 8th, 1909. 



In the Optical Lecture Room. 



Professor Sedgwick, President, in the Chair. 

 The following was elected a Fellow of the Society : 

 G. Dixon, M.A., Trinity College. 



The following Communications were made : 



1. On the Nature of Anthocyanin. By Miss M. Wheldale. 

 (Communicated by Professor Bateson.) 



2. An Experiment on lonisation with y Rays. By L. Vegard. 

 (Communicated by Professor Sir J. J. Thomson.) 



3. The Nature of the lonisation produced in a Gas by y Rays. 

 By R. D. Kleeman, B.A. (Communicated by Professor Sir J, J. 

 Thomson.) 



4. On Uniform Oscillation. By Dr Young. 



