Proceedings at the Meetings. 509 



2. An Exhibition of Fishes and Amphibia to illustrate new- 

 methods of mounting specimens for Museums. By J. S. Budgett, 

 M.A., Trinity College. 



3. Notes on the Embryology of Sagitta. By L. Doncaster, B.A., 

 King's College. 



November 25th, 1901. 



In the Cavendish Laboratory. 



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



The following were elected Fellows of the Society : 



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

 L. N. G. Filon, B.A., King's College. 

 G. H. Hardy, B.A., Trinity College. 

 W. F. Lanchester, M.A., King's College. 

 F. H. A. Marshall, B.A., Christ's College. 

 O. W. Richardson, B.A., Trinity College. 



The following Communications were made : 



1. The negative radiation from hot Platinum. B}^ O. W. 

 Richardson, B.A., Trinity College. 



2. On the ions produced by incandescent Platinum. By Professor 

 J. J. Thomson, Trinity College. 



3. On the action of incandescent metals in producing Electric 

 Conductivity in Gases. By J. A. McClelland, B.A., Trinity College. 



4. On the Seminvariants of Systems of Binary Quantics, the order 

 of each quantic being infinite. By Major P. A. MacMahon. 



5. On the Zeros of Polynomials. By J. H. Grace, M.A., 



St Peter's College. 



6. The Type specimens of LyginodemJron Oldhamium (Binney). 

 By E. A. N. Arber, B.A., Trinity College. (Communicated by 

 Mr A. C. Seward.) 



30—2 



