508 APPENDIX. 



NOTE 22. Ultimate composition of cysiin. 



Carbon 

 Hydrogen . 

 Nitrogen . 

 Oxygen "I 

 Sulphur f 



NOTE 23. Ultimate composition of glycerin. (Pelouze.) 



Carbon 



Hydrogen 



Oxygen 



Hydrated. 



39-59 



8-61 



51-80 



Atoms. 

 6 

 8 

 6 



Anhydrous. 

 43-84 

 8-35 

 47-84 



Atoms. 

 6 

 7 

 5 



NOTE 24. Ultimate composition of stearic acid. (E/edtenbaclier.) 



Carbon 



Hydrogen 



Oxygen 



76-71 

 12-86 

 10-46 



Atoms. 

 68 

 68 



7 



Calculated. 



76-76 

 12-90 

 10-34 



Ultimate composition of margaric acid. (Redtenbacher.] 



Carbon . 75-64 



Hydrogen . . 12-86 



Oxygen . . 11-50 



The former contains two, and the latter one atom of water. 



Atoms. 



34 



35 



4 



Calculated. 

 75-64 

 12-71 

 11-65 



NOTE 25. Ultimate composition of lactic acid. 



Lactic acid has been analysed by several chemists, who have all arrived at nearly 

 the same results. 



Carbon 



Hydrogen 



Oxygen 



Anhydrous. 



44-92 



6-55 



48-53 



Atoms. 

 6 

 5 

 5 



NOTE. In vol. i, p. 222, it was inadvertently stated that hippuric acid is non- 

 nitrogenous. The object of the author is to show that, compared with uric acid, it 

 contains very little nitrogen. 



