Proceedings. 285 



[Physical and Mathematical Section.'] 



Ordinary Meeting, 23rd October, 1889. 



James Bottomley, D.Sc, President of the Section, 



in the Chair. 



Moved by Mr. J. A. BENNION, M.A., seconded by Mr. 

 Wm THOMSON, F.C.S., and resolved that a copy of the 

 following resolution be forwarded to the family of the late 

 Dr. Joule : — 



" The members of the Physical and Mathematical Section 

 of the Manchester Literary and Philosophical Society beg 

 to tender to Mr. J. A. Joule and the other members of the 

 family their sincere condolence in the loss which they have 

 recently sustained by the death of the late Dr. James Pres- 

 cott Joule. Dr. Joule was a member and a former President 

 of the Section, and the members feel keenly the loss of one 

 whose eminence in science and kindly interest in the work 

 acted as a powerful stimulus to its advancement and success." 



Mr. J. A. BENNION, M.A., explained the Gerard-Barre 

 hydraulic sliding railway shown at the recent Paris 

 Exhibition, and also the process of making a fibre resembling 

 silk from sawdust, as shown in the Forestry Section of the 

 same Exhibition. 



Dr. Bottomley read a paper entitled " Note on the 

 Rate of Dissolution of Solids." 



[Physical and Mathematical Section^] 



Ordinary Meeting, 20th November, 1889. 



James Bottomley, D.Sc, President of the Section, 

 in the Chair. 



Mr. J. A. BENNION, M.A., was elected a Vice-President 

 of the Section. 



Mr. Wm. THOMSON, F.C.S., described a new Hygrometer 

 invented by M. Mithof, and stated that he had himself been 

 working for some time at the problem of producing a 

 hygrometer, which should indicate the amount of vapour of 

 water in the atmosphere of weaving-sheds, independently of 

 temperature. 



