248 Proceedings of the Philosophical Society of Glasgow. 



cold water about two pounds. This being the case, it may be a correct 

 instrument as applied to cold water, but never can be correct as applied 

 to the water of marine boilers. 



April 28, 1852. — Mr. Crum in the Chair. 



The concluding meeting of the session was held this evening. 



It was reported from the Council that it had agreed to meet on the 

 4th of August, for the purpose of appointing delegates to represent the 

 Society at the meeting of the British Association at Belfast. 



The Council proposed that the Jubilee Dinner of the Society shall take 

 place on the 9th of November, when the Society completes its fiftieth year. 

 It was recommended that members be allowed to introduce their friends 

 on the occasion. The arrangements were left in the hands of the Council. 



The following papers were read : — 



1. Mr. J. A. Campbell—" Visit to the Quicksilver Mine of Idria." 



2. Mr. C. J. Hughes — " Remarks on Binocular Vision and the Stereo- 

 scope, with Photographic Illustrations." 



3. Mr. Harvey exhibited and described Bourdon's Steam Pressure 

 Guage. 



GLASGOW: 

 PRINTED nV BELL AND BAIN, ST. ENOCH SQUARK. 



