122 mvxlRKs. 



Fisli (like all other nitrogenous manures) l-Iiot ] 

 never be applied as a top dressing, unless previouf y 

 mixed with a good absorbent of ammonia ; but shoulrl, 

 Avhen used alone, be immediately plowed under to 

 considerable depth, to prevent the evaporation — and 

 consequent loss — of their fertilizing gases. 



"Within the past few years the manufacture of oil from 

 fish has become a ver}- extensive industry, especially 

 along the coast of New England. The fish are caught 

 in immense quantities and delivered to the factories, 

 where they are first cooked by steaming and then 

 subjected to very heavy pressure, which removes their 

 oil. The solid matter which is left behind, contain- 

 ing the bones, scales, and muscular tissues, h run 

 through a " picker," and sold for manure. It con- 

 tains all of the fish that is of value for this purpose, 

 in a ver}' concentrated form, and it is easy of applica- 

 tion to the soil. It is now sold for about one-third 

 of the value of Peruvian guano, at which price it is 

 a much more economical fertilizer. 



WOOLLEX EAGS, ETC. 



Woolle7i rags, hair, waste of icoolleii factomeSs etc., 

 contain both nitrogen and phosphate of lime ; and, like 

 all other matters containing these ingredients, are 

 excellent manures, but they must be used in such a 

 Avay as to prevent the escape of their fertilizing gases. 

 They decompose slowly, and are therefore considered 

 a lasting manure. Like all lasting manures, how- 

 ever, they are slow in their efiiects, and the most ad- 



