[ 539 1 



use may be systematically manufactured for sale to cultivators 

 would afford a great sanitary and agricultural object lesson to 

 village unions and other rural and local bodies, and the sub- 

 ject is earnestly put forth for the consideration of students 

 of Indian Agriculture. 



865. Of other easily available nitrogenous manures may 

 be mentioned blood, which contains 3*7 per cent. N and 5 

 to 15 per cent, in the state of " dried blood", as blood 

 is dried usually with the addition of gypsum and HgSCXi. 

 Blood contains 23 per cent, of dry matter i. e. almost 

 as much as flesh which contains 25 per cent, of dry 

 matter and 4 per cent, of N. Flesh after boiling and dry- 

 ing contains 12 per cent, of water 9 to 9^ per cent, of N, 4 

 per cent, of Phosphates. Boiling is done to get rid of the fat. 

 Skins, hair, horn, and feather contain in their natural state 4 

 to 8 per cent, of N and in dry condition about 15 per cent. 

 Carcasses of animals espicially horses subjected to the action 

 of steam and reduced to 'a pulp by the addition of HaSO^ 

 and mixed with super, are also used in Europe as " Turnip 

 manure." In India we can bury the carcasses with the 

 addition of some lime in agricultural land, and village 

 unions may be entrusted with the duty of proper burial of 

 carcasses. A carcass weighing 500 Ibs. yields 12 Ibs. of NH-j, 

 24 Ibs. of PgOo and 14 Ibs. of K 2 O. Woollen rags and refuse 

 called 'shoddy' are also a good manure containing 5 to 9 

 per cent, of N, equivalent to 6 to io| per cent, of NH 3 , 

 Cotton and Jute refuse are, however, almost useless as 

 manure. Leather though it contains as much as 5^ to 6 

 per cent, of N is also useless as a manure, as the process of 

 tanning renders the N undecomposeable. Refuses from glue 

 and tallow-making factories, rum and spirit factories, indigo, 

 sugar and silk factories, are also valuable manures. All 

 animalsj as fish, frogs, snails &c. are valuable as manure when 

 available in large quantities. When dry they contain 5 to 7 per 

 Cent, of N and 12 to 18 per cent* of PaOs. Refuse of fishes 



