xii Proceedings. [October 16th, 1906. 



In like manner configurations are assigned to the molecules 

 of naphthalene, anthracene, triphenylamine, the di-hydroxyben- 

 zenes, and a number of triphenylmethane derivatives (see Trans. 

 Chem. Soc, 1906, 1675). 



Just as the ordinary aspect of the valency law is exactly 

 analogous to one geometrical property of close -packed assem- 

 blages of elastic spheres, so also is multivalehcy precisely 

 analogous to another geometrical property of such assemblages. 

 It has thus not been found necessary to assign different volumes 

 to the spheres of influence of ter- and quinque-valent nitrogen, 

 the fundamental valency of three determining the volume of 

 the sphere of influence of the element. 



The paper was illustrated by a number of models devised 

 by the writers. 



General Meeting, October 30th, 1906. 



Mr. Charles Bailey, M.Sc, F.L.S., in the Chair. 



The President moved on behalf of the Council, and 

 Mr. R. L. Taylor seconded the following resolution : — 



" That in future the time of commencement of the Evening 

 Meetings of the Society be changed from Half-past Six 

 to Six o'clock." 



It was carried unanimously. 



Mr. Charles Renold, Engineer, Graduate of Cornell 

 University, Ithaca, Prestnall Hey, Heaton Mersey ; Miss Ida 

 Smedley, D.Sc, Assistant Lecturer in Chemistry in the Univer- 

 sity of Manchester ; Mr. H. F. Coward, M.Sc, Assistant 

 Lecturer in Chemistry in the University of Manchester; 

 Mr. E. C. Edgar, D.Sc, Assistant Lecturer and Demonstrator 

 in Chemistry in the University of Manchester ; and Miss Grace 

 Wigglesworth, M.Sc, Sparth Mount, Heaton Norn's, were 

 elected ordinary members of the Society. 



