ON THE COMPOSITION OF ALCOHOL. 



269 



certainty left by the composition of this vapour however 

 can affect only an 11th part of the alcohol subjected to ana- 

 lysis. 



On adding together the weights of the immediate pro- ^nmediate pro- 

 ducts of the whole process, we find, that 2180*5 grs of al- coiuposhi'o^nS 

 cohol afforded the alcohol. 



Gas 17S6-61 grs 



Water 193-50 



Oil 4 



Charcoal 3*25 



Ashes 1 



1988-36 

 Deficiency from fumes, chiefly aque- 

 ous 192-14 



2180-5 



Analysis of the oxicarhuretted hidrogen gas. 



The 7199 cnbic inches of this gas contained no carbonic Analysis of the 

 acid gas. They were collected in eighteen jars, all of o^'^arburetted 

 which were examined eudiometrically. I shall give here 

 the mean of these eighteen analyses, deducting the atmo- 

 spheric air contained in the vessels previous to the distilla- 

 tion. With 100 parts of the oxicarburretted hidrogen gas 

 were mixed 200 of impure oxigeu gas, consisting of 190 

 oxigen and 10 nitrogen. The mixture inflamed by the elec- 

 tric spark left for a residuum some water, and a mixture of 

 carbonic acid gas, oxigen gas, and nitrogen gas, occupying 

 together the space of 156-5 parts. These were washed with 

 lime water, and analysed afresh by Volta's eudiometer, add- 

 ing to them hidrogen gas. I thus found, that they con- 

 tained 



Carbonic acid gas 78 



C xigen gas 65*93 



Nitrogen gas 1 2*57 



156-5. 



These 



