in various Substances. 



443 



The following table shews the results of the ex- 

 periments with the various substances therein men- 

 tioned : 



Now the warmth of a body, or its power to confine 

 Heat, being as its power of resisting the passage of 

 Heat through it (which I shall call its non-conducting 

 power] ; and the time taken up by any body in cooling, 

 which is surrounded by any medium through which the 

 Heat is obliged to pass, being, cteteris paribus, as the 

 resistance which the medium opposes to the passage of 



