RELATION OF PROTEINE TO ALLANTOINE. 141 



the. tissues in the foetal calf, considering the pro- 

 teine furnished in the blood of the mother as the 

 substance which undergoes or has undergone a 

 transformation ; it will appear that 2 at. of pro- 

 teine, without the addition of oxygen or any other 

 foreign element, except 2 at. of water, contain the 

 elements of 6 at. of allantoine and 1 at. of cholo- 

 idic acid, (meconium ?) 



2 at. proteine=2 (C^N^Ou) + 2at.water=2 HO=C 96 N 

 ' 6 at. allantoine, 6 (C 4 N 2 H 3 O 3 ) = C 24 N 12 Hi 8 O 13 

 1 at. choloidic acid = C 7 , JL fi O,, 



36. But the elements of the six atoms of al- 

 lantoine in the last equation correspond exactly to 

 the elements of 2 at. of uric acid, 2 at. of urea, 

 and 2 at. of water. 



(2 at. uric acid C^ H 8 O 12 

 2 at. urea C 4 N 4 H 8 O 4 

 2 at. water H 2 O 2 



C 24 N 12 Hi 8 O 18 



The relations of allantoine, which is found in the 

 urine of the foetal calf, to the nitrogenised con- 

 stituents of the urine in animals which respire, are, 

 as may be seen by comparing the above formula*, 

 such as cannot be overlooked or doubted. Allan- 

 toine contains the elements of uric acid and urea 

 that is, of the nitrogenised products of the transfor- 

 mation of the compounds of proteine. 



37. Further, if to the formula of proteine, multi- 

 plied by 3, we add the elements of 4 at. of water, 



