58 
On Vegetable and Animal Analysis . 
the hydrogen is in a greater proportion to the oxygen than 
in water; that the greater the excess of hydrogen, the 
greater is the quantity of azote which they contain also : 
that these two quantities are almost both in the same pro- 
portion as in ammonia, and that it is probable that this 
proportion, which we nearly approach, does actually 
exist : the more, probably, because we always find a little 
too much hydrogen, and as all the errors which we can 
make tend to increase the quantity of it. We shall judge 
of this by the two following analyses. 
One hundred parts of fibrine contain : 
Carbon 51.675 
Hydrogen and oxygen in the proportion in which they exist 
in water . 26.607 
Hydrogen in excess 5.387 
Azote .......... 16.331 
100 
One hundred parts of caseous matter contain : 
Carbon • .57.190 
Hydrogen and oxygen in the proportion in which they exist 
in water ......... 18.778 
Hydrogen in excess ........ 5.680 
Azote 18.352 
100 
Admitting this report to be correct, these substances 
would correspond, with respect to the rank which they 
ought to hold among the animal substances, to the rank 
occupied by sugar, gum, ligneous fibre, &c. among the 
vegetable substances : for in the same way as hydrogen 
and oxygen, the gaseous principles of the former, may 
be reciprocally saturated and form water; in the same 
way hydrogen, oxygen and azote, the gaseous principles 
of the latter, may be also reciprocally saturated and form 
