512 Proceedings at the Meetings. 



2. The influence of currents in metals on reflected and transmitted 

 light. By P. V. Be van, B.A., Trinity College. 



3. (a) On the conductivity of the vapours of the alkali metals. 

 (b) On Induced Radio-activity. By Professor J. J. Thomson, Trinity 

 College. 



4. On the Hall Effect in Gases at Low Pressures. (Second paper.) 

 By H. A. Wilson, B.A., Trinity College. 



5. On the extraction of the Gases from one cubic centimetre of 

 Blood. By J. Barcroft, M.A., King's College. 



6. On the Coefficient of Mutual Induction between a circle and a 

 circuit with two parallel sides of infinite length. By G. F. C. Searle, 

 M.A., Peterhouse. 



7. Notes on Semper's Larvae. By K. Ramunni Menon, B.A., 

 Christ's College. (Communicated by Mr A. E. Shipley.) 



May 5th, 1902. 



In the Optical Lecture Room. 



Mr J, Larmor, Vice-President, in the Chair. 

 The following Communications were made : 



1. Regeneration in Samia ailanthus. By H. H. Brindley, M.A., 



St John's College. 



2. On the " Unit of Classification for Systematic Biology." A 

 reply to Mr Bernard. By J. Stanley Gardiner, M.A., Gonville and 

 Caius College. 



3. Remarks on Marconi's system of Telegraphy. By H. M. 

 Macdonald, M.A., Clare College. 



4. Note on a general numerical connection between the atomic 

 weights. By J. H. Vincent, B.A., St John's College. 



5. On Trinodal Quartics. By A. B. Basset, M.A, Trinity College. 



6. On a definite Integral. By T. J. I'A. Bromwich, M.A., 



St John's College. 



7. Reflexion and transmission of light by a charged metal surface. 

 By P. V. Bevan, B.A., Trinity College. 



