T OI- 

 lOS HEAT RENDERED EVIDENT. 



if 9ffa lo f)98oqrnof) Q 

 It is observable that by the action of the common electrical 



machine, no effect of heat is exhibited, except on the discharge 

 by which equilibrium is restored and light is produced. This 

 would intimate that the effect of heat is absent, when the 

 direct decomposition of light is occasioned by the separation of 

 the positive from the negative portions of electricity ; but that 

 it becomes apparent only in their re-union during their passage 

 through media, the constituents of which are disturbed from 

 i\\e friction occasioned by the energy and velocity with which 

 the decomposed electricity (or light) passes to accomplish 

 re-union. 



In Voltaic electrical operations where the separation and 

 re-union are continuous, it is quite different, the disturbances 

 are unabated, and the excitation progressively increases, 

 so that the sensation of heat is rendered evident, and by dura- 

 tion is productive of what is termed increased temperature. 



Phosphorus, at present numbered as one of the original un- 



. KH1089J) 



decompounded bodies, appears, on the contrary, to be com- 

 posed of radiant matter or light, in such a loose uncombined 

 state with matter which may be deemed -fixed or palpalle, 



1 , ! ! 



that it is, as it were, an amalgum or both. 



It has the power to emit light without undergoing com- 

 bustion. 



It will spontaneously inflame on contact with hot water. 



If rubbed on the hands, or any part of the body, in a dark 

 room, it will appear highly luminous, without producing the 

 sensation of heat. 



Phosphorus is not luminous in either nitrogen or oxygen 

 gas, but is completely so in atmospheric air being a mixture 

 of both, as one iofour. It is a natural product chiefly derived 

 from animal matter. 



Organized vegetable bodies, which are acknowledged to be 

 composed of the three original elements, oxygen, nitrogen, and 

 hydrogen, with carbon (here asserted to be a compound of the 

 three), become the aliment of organized animal bodies, which 



