xviii. Proceedings. [Maj' 17,^/1, 191 g. 



Society of the existing balance of the current annual 

 Subscription of the Club together with the effects of 

 the club." 



These resolutions were adopted. 



While the Council could not at once proceed to the 

 enlargement of the Society's House it would use its 

 best efforts to promote such improvements in the 

 near future. 



General Meeting, May 13th, 191 9. 



The President, Professor G. Elliot Smith, M.A., .M.D., F.R.S., 

 in the Chair. 



Miss Florence Seafield Grant, M.A., B.Sc, Geography 

 Specialist, Whalley Range High School, jy, Gardne?- Road, 

 Prestwich ; Miss Rona Robinson, M.Sc, Research Chemist, 

 Moseley Villa, Miiford Road, Withington, Manchester ; and Dr. 

 Alan Ferguson, Lecturer in Physics in the College of 

 Technology, The College of Technology, Manchester ; were elected 

 Ordinary Members of the Society. 



Ordinary Meeting, May 13th, 1919. 



The President, Professor G. Elliot Smith, M.A., M.D., F.R.S., 

 in the Chair. 



Professor G. Elliot Smith presented to Professor Sir Ernest 

 Rutherford a Dalton Medal (struck in 1S64), awarded to 

 him by the Council in recognition of his brilliant researches in 

 Physical Science. 



Professor Sir Ernest Rutherfc)RD, M.A., D.Sc, F.R.S., 

 read a paper entitled " Recent Evidence on Atomic 

 Structure." 



On the nucleus theory of atomic structure, the atom 

 is supposed to consist of a massive nucleus carrying a 

 positive charge, surrounded at a distance by a compensa- 

 ting distribution of negative electrons. For distance up to 

 lo-i- cms., the nucleus is supposed to have such 'small 

 dimensions that it may be regarded as a point charge. The 

 careful experiments of Geiger and Marsden on the large 

 angle scattering of a rays in passing through matter are in 

 close accord with this theory and show that within the limit 

 of experimental error the forces between the a particle and 

 the nucleus vary as the inverse square of the distance. In 

 addition, the variation of the number of scattered particles 



