lf)0 



PROFESSOR FORBES'S RESEARCHES ON HEAT. 



41. The numbers from which these projections are derived are contained in 

 the following Table.* 



42. When we examine the projected interpolating lines of Plate XI, which an 

 attentive inspection will shew to have been laid down with the gi-eatest care,t we 

 are struck by the remarkable coincidence which obtains between them ; a result so 

 far contrary to what I expected, that it shews that by this method we cannot hope 



• Most of the experiments on incandescent platinum were made early in 1837, the remainder during 

 the winter 1837-«. 



t The interpolating line for Incandescent Platinum is in the engraving placed at rather too high 

 an angle. 



