2i6 Of the Light manifested in Combustion. 



in need of any particular remarks or observations to 

 recommend them to the attention of the Society. 



On comparing the results of these nine experiments, 

 it appears that the quantities of light furnished were 

 very far from being in a constant ratio to the quan- 

 tities of oil consumed, as they would doubtless have 

 been, were light one of the chemical products of com- 

 bustion. 



The intensity of the light answering to the consump- 

 tion of 100 parts of oil per hour was near four times 

 greater in the ninth experiment than in the first, 

 though the flame was equally bright in these two 

 experiments as well as in all the others, and was not 

 accompanied either by smoke or smell. 



Suspecting that a small flame of any given form 

 must in all cases furnish less light in proportion to the 

 oil consumed than a larger flame of the same form, 

 to determine that fact I made the following experi- 

 ments : — 



I caused a lamp to be constructed with a wick com- 

 posed of four flat ribbon wicks, each a quarter of an 

 inch in diameter, sewed together on one of their sides, 



