184 MANURE. 



Carbon, 50.894 



Hydrogen, G.781 



Nitrogen, 17.225 



^^^g^"' I ...... . 25.099 



Sulphur, ) 



100.00 



Scherer. 



Compact horny matter includes hair, horn, nails, claws, 

 hoofs, scales. Like all the other compounds of proteine, 

 these contain sulphur, lime, magnesia, &c., and from J to 2 

 per cent, of bone earth. The effect of these as phosphates 

 has been adverted to, section 169. These all give varied 

 portions of ashes. The beard gives about 0.72 per cent. ; 

 blond colored hair, 0.8, and the black hair of a Mexican, 0.2 ; 

 nails, 0.5 ; wool, 2 ; and gelatine of bone, 0.7 per cent, of 

 ashes. These all evolve amm.onia by caustic alkali, an effect 

 which might have been predicted from their composition, 

 which is, according to Scherer : 



Carbon, 

 Hydrogen, 



Nitrogen, 



Oxygen, 



Sulphi 



Hair affords a substance, in addition to its proteine, and 

 to which feathers are analogous. The composition of the 



last is, 



Feather. Quill. 



Carbon, .... 50.474 52.427 



Hydrogen, . . . 9.110 7.213 



Nitrogen,. . . . 17.682 17.893 



Oxvgen, .... 24.774 22.467 



en, ) 

 lur, ) 



