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XL Observations mid Experiments on the Light of Bodies in a 
State of Combuftion. By the Rev . Mr. Morgan ; communicated 
by the Rev. Richard Price, LL.D. F.R.S. 
Read January 27, 1 78 5. 
difcuffion which I now with to lay before the Royal 
-I- Society is nothing more than a feries of faCts, and of 
conclufions which feem to flow from thofe faffs, and from an 
attention to the following data. 
I. That light is a body, and like all other bodies fubjeCt to 
the laws of attraction. 
IL That ligrft is an heterogeneous body, and that the fame 
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 
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 
