308 APPENDIX. 



It is possible that, in the course of new and repeated 

 investigations, the composition of substances obtained 

 from bile may be found different from that which has been 

 given in our analytical development of this subject. 

 But this, if it should happen, can have but little effect on 

 our formulas ; if the relative proportions of carbon and 

 nitrogen be not changed, the differences will be confined 

 to the proportions of oxygen and hydrogen. In that case 

 it will be necessary for the development of our views in 

 formulas, only to assume that more water and oxygen, or 

 less water and oxygen, have taken a share in the meta- 

 morphosis of the tissues ; but the truth of the develop- 

 ment of the process itself will not be by this means 

 affected. 



NOTE XXXI. P. 129. 

 COMPOSITION OF CHOLIC ACID, a 



Dumas. Calculated C 7 4H6oOi 8 . 



Carbon 68-5 68-9 



Hydrogen .... 97 9-2 



Oxygen 21-8 21-9 



a Ann. der Pharm., XXVII., 295. 



NOTE XXXII. P. 131. 



COMPOSITION OF THE CHIEF CONSTITUENTS OF THE 

 URINE OF MEN AND ANIMALS. 



1. URIC ACID. 



Liobig.*o Mitscherlich. b Calculated CioH^Oe. 



Carbon . . 36-0&3 35-82 36-01 



Hydrogen . 2441 2.38 2-35 



Nitrogen. . 33-361 34-60 33-37 



Oxygen . 28126 27-20 28-27 



a Ann. der Pharm., X., 47. 



b Poggendorff's Ann., XXXIII., 335. 



