114 Prof. Thomson on the Dynamical Theory of Heat. 



Table II. — Mechanical Effect in Foot-Pounds due to a Thermic 

 Unit Centigrade, passing from a body, at any Temperature 

 less than 230° to a body at 0°. 



3G. The following tables show some numerical results which 

 have been obtained in this way, with a few (contained in the 



lower part of the second table) calculated from values of / ixdt 



*J 



estimated for temperatures above 230°, roughly, according to the 

 rate of variation of that function within the experimental limits. 



