Proceedings at the Meetings. 249 



The following Communications were made : 



1. The Origin of the Thoroughbred Horse. By W. Ridgeway, 

 M.A., Gonville and Caius College, Disney Professor of Archaeology. 

 (Communicated by Mr A. E. Shipley.) 



2. Note on the resolution of Compound characters by Cross- 

 breeding. By W. Bateson, M.A., St John's College. 



3. Notes on rearing the later stages of Echinoid Larvae. By 

 L. Doncaster, B.A., King's College. 



4. (1) On the Galois theory of differential equations. (2) On the 

 structure of continuous groups. By H. F. Baker, Sc.D., St John's 

 College. 



5. On spontaneous ionization in air at different temperatures and 

 pressures. By J. Patterson, B.A., Emmanuel College. 



6. Note on the behaviour of a Potassium Amalgam Cathode in a 

 vacuum tube. By Theodore Lyman. 



January 19 th, 1903. 



In the Optical Lecture Room. 



Mr A. C. Seward, Vice-President, in the Chair. 

 The following was elected a Fellow of the Society : 

 E. S. Montagu, B.A., Trinity College. 

 The following Communications were made : 



1. On the invariant factors of a determinant. By H. F. Baker, 

 Sc.D., St John's College. 



2. On the variation with wave-length of the double refraction in 

 strained glass. (Second paper.) By L. N. G. Filon, B.A., King's 

 College. 



3. On the Alimentary Canal of the Mosquito. By A. E. Shipley, 

 M.A., Christ's College. 



4. On Integral Functions. (Second paper.) By E. W. Barnes, 

 M.A., Trinity College. 



5. On the theory of shadows. By H. M. Macdonald, M.A., Clare 

 College. 



