November 28th, ipoj.] PFOCEEDINGS. vii 



Mr. H. MoRRis-AiREY, M.Sc, read a paper entitled "On 

 the Variation of the Electrical Resistance of Osmium 

 with Temperature." The range over which the experiments 

 were conducted extended from the temperature of liquid air up 

 to dull red heat. The results show that the behaviour of osmium, 

 like that of the ordinary metals, can be represented by a 

 parabolic expression. 



December 12th, 1905. 



The Ordinary Meeting fixed for this date was not called, 

 but a Conversazione was held in the Society's House on 

 the invitation of the President and Council. 260 cards of 

 invitation were issued to members and other persons not 

 connected with the Society, and a full descriptive catalogue of 

 the very interesting exhibits brought together on the occasion 

 was printed and distributed to those present. 



Ordinary Meeting, January i6th, 1906. 



The President, Sir William H. Bailey, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the table. 



Mr. H. Stansfield, B.Sc, described the behaviour of 

 liquid films formed from a solution of saponin in water. 

 Although saponin films have very little mobility, they are 

 capable of becoming extremely thin. The limiting thickness of 

 a black saponin film is comparable with that of the thinnest 

 soap film. In the process of thinning, the saponin films exhibit 

 a grey stage ; and there are two characteristic abrupt changes 

 in thickness, the first from the white of the first order to the 

 grey, and the second from the grey to the black. 



