Proceedings at the Meetings 213 



The following were elected Associates : 



T. A. Browne, Trinity College. 



J. Chadwick, Gonville and Gains College. 



Miss L. V. Craies, Newnham College. 



H. Henderson, Gonville and Caius College. 



F. P. Slater, Gonville and Caius College. 



E. F. Vacin, Trinity College. 



The future policy of the Society, with special reference to the form 

 and character of its publications, and the conduct of its meetings, was 

 discussed . 



November 10, 1919. 

 In the Comparative Anatomy Lecture Room. 



Mr C. T. R. Wilson, President, in the Chair. 

 The following was elected an Associate: 



Donald A. MacAlister, King's College. 

 • The following Communications were made to the Society : 



1. Colourimeter Design. By H. Hartridge, M.D., King's College. 



2. A note on photosynthesis and hydrogen ion concentration. By 

 J. T. Saunders, M.A., Christ's College. 



3. (1) The effects of some electrolytes upon spermatozoa. 

 (2) The effects of ions upon ciliary movement. 



By J. Gray, M.A., King's College. 



4. Note on the solitary wasp, Crabro cephalotes. By C. Warburton, 

 M.A., Christ's College. 



5. Preliminary note on the life-history of a Proctotrypid {Lygocenis 

 sp.) hyperparasite of Aphidius. By Miss M. D. Haviland. (Communi- 

 cated by Mr H. H. Brindley.) 



6. The Natural History of Rodriguez, ivith Exhibits. By H. J. Snell 

 and W. H. Tams. (Communicated by Professor Stanley Gardiner.) 



November 24, 1919. 

 In the Cavendish Laboratory. 



Mr C. T. R. Wilson, President, in the Chair. 

 The following were elected Fellows of the Society: 



J. Line, M.A., Emmanuel College. 



L. F. Newman, M.A., Downing College. 



A. D. Ritchie, M.A., Trinity College. 



J. B. Seth, B.A., Trinity Hall. 



G. I. Taylor, M.A., Trinity College. 



G. P. Thomson, M.A., Corpus Christi College. 



S. M. Wadham, M.A., Christ's College. 



14—3 



