BY MIXED MANURES. 295 



Oxygen 21.2.88 I Carbon 55.742 



Hydrogen 6.827 | Nitrogen 16.143 



IM. 

 or in symbols C'^^H^SN^O^'*. It appears now to be well estab- 

 lished that this substance is the basis of animal bodies. 

 Fibrin or flesh, and albumen or the white of eggs, are com- 

 posed of protein and sulphur. " 



Horny matter is of two kinds, soft and compact. The 

 soft variety includes the cutiele of the skin, and the lining 

 membrane of the internal passages and sacs. 



The eompact variety includes horns, hoofs, nails, claws, 

 scales, feathers, hair and wool. These substances all con- 

 tain sulphur, lime, magnesia, and from ^ to 2 per cent, of 

 bone earth.* 



1. Horns and hoofs. The shavings and piths of horns 

 and hoofs of neat-cattle make a very powerful manure. About 

 0.3 per cent, is phosphate of lime and earthy matter ; the re- 

 maining substances are, in 100 parts. 



Carbon 51.540 i Nitrogen 17.284 



Hydrogen 6.7D9 \ Oxygen and sulphur 24.397 



The horns and piths may be cut with an axe or ground in a 

 bone-mill, then mixed with green manure, a bushel to a load, 

 spread upon the field, and buried with the plough. The fer- 

 mentation of the dung promotes the decay of the animal mat- 

 ter, and large quantities of ammonia will be evolved. 



2. Nails and claivs are composed of 



Carbon 51.019 I Nitrogen 16.901 



Hydrogen 6. 824 | Oxygen and sulphur 24.608 



These of course will yield a large quantity of ammonia, and 

 therefore they will constitute a powerful manure. 



3. Hair is composed of 



Carbon 50.652 | Nitrogen 17.936 



Hydrogen 6.769 I Oxygen and sulphur 24.643 



. (Scherer.) 



* Dana. 



