of Heat by Gaseous and Liquid Matter. 



83 



former memoirs). This chamber, as in my previous investiga- 

 tions, passes through the vessel V, through which cold water 



continually circulates, entering at the bottom and escaping at 

 the top. The heat is thus prevented from passing by conduction 

 from the source C to the first plate of rock-salt S. This plate 

 forms the end of the hollow cylinder AB, dividing it from the 



G2 



