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XL Ohfeivatlons and Rxperhncnts on the Light of Bodies in a 

 State of Combujlion. By the Rev, Mr. Morgan ; communicated 

 By the Rev. Richard Price, LL.D. F,R.S. 



Read January 27, 1 785. 



rHE difcufTion which I now wifli to lay before the Roy^i 

 Society is nothing more than a feries of fadls, and of 

 conclufions which feem to flow from thofe facls, and from an 

 attention to the following data. 



I. That light is a body, and like all other bodies fubjcvSt to 

 the laws of attraction. 



II. That light is an heterogeneous body, and that the flime 

 attractive power operates with different degrees of force on its 

 different parts. 



III. That the light which efcapes from combuftibles when 

 decompofed by heat, or by any other means, was, previous to I 

 its efcape, a component part of thofe fubftances. 



It is an obvious conclufion from thefe data, that when 

 the attractive force, by which the feveral rays of light 

 are attached to a body, is weakened, fome of thofe rays will 



efcape 



