1818.] Proximate Principles of the Urine. 355 



Hence it consisted of 



Hydrogen 0-1 1 



Carbon - 1"37 



Azote 1-61 



3^09 

 Oxygen 0"91 



4-00 

 which correspond with 



latom or 1 volume of hydrogen 1-25 ) %l hydrogen 2-857 



2 atoms or 2 volumes of carbon . . 15-00 \ Z ) carbon . . 34 28b 



1 atom or * volume of oxygen . 10-00 I fc ) oxygen. . 234W7 



1 atom or 1 volume of azote . . . 17j5_ J § C azote. . . 40 000 



43.75 100-000 



Since Dr. Prout completed his experiments, M. Berard 

 has published an analysis of several animal substances, and 

 among others of urea andhthic acid, in which he employed the 

 oxide of copper; his results do not entirely coincide with Dr. 

 Prout's, although they bear a general resemblance to them. 

 Dr Prout places his own results in the following tabular form : 



From these experiments the author draws some general con- 



T The theory of definite proportions holds good in all these 

 instances : and from this circumstance it is probable that it will 

 do so in all bodies that are capable of forming crystalline com- 

 pounds, either from the animal or vegetable kingdoms. 



2 The above compounds appear to be formed by the union ot 

 more simple compounds ; as urea of carburetted hydrogen and 

 nitrous oxide, hthic acid of cyanogen and water, Sec. whence it 

 is inferred that their artificial formation falls within the limits 

 of chemical operations. 



3. The relation which exists between urea and sugar seems to 

 explain in a satisfactory manner the phenomena of diabetes, winch 

 may be considered as a depraved secretion of sugar, lhe 

 weight of the atom of sugar is just half that of the weight of the 



z 2 



