FERTILIZERS. 89 



ton, or an advance of from two hundred to four hundred 

 per cent." In these forms, about all the ammonia may be 

 assumed to be available the same season they are used, 

 and from one-half to two-thirds of the phosphoric acid. 

 As these fish-wastes are usually heavily charged with salt 

 (used when fresh, to keep them), it is the best plan to use 

 them on salt-loving crops, as cabbage, onions, and mangel- 

 wurzels. They can either be spread on the surface in the 

 fall, harrowed in, or slightly ploughed under, or be com- 

 posted in the spring with barn manure into which enters 

 a good proportion of horse manure. Be sure to cover the 

 heap, especially the top, with dry earth and plaster. These 

 wastes are usually bought up by manufacturers of fertil- 

 izers ; and the surplus to be found in the market, acces- 

 sible to farmers, is never very large. I have used them 

 for many years somewhat extensively, having fifty tons of 

 them at the present time, mostly composted with barn 

 manure and rock-weed. 



As my treatise is for the benefit of my fellow-farmers, 

 I will give the addresses of parties who deal in these and 

 other fertilizing materials at first hand ; though it may not 

 be the wisest thing for me to do, viewed from a pecuniary 

 stand-point, as it will tend to send me to a dearer market. 



Dealer in fish-skins, Fred L. Stacey of Gloucester, Mass. ; 

 dealers in liver and halibut chum, A. W. Dodd & Co. of 

 Gloucester, Mass., and Messrs. Parker & Smith, Derby 

 Wharf, Salem, Mass. 



Dealers in unleached Canada ashes, Messrs. Munroe, 

 Judson, & Stroup, Oswego, N.Y. 



Dealers in ammonite, M. L. Shoemaker (he has two 

 grades), Philadelphia, Penn. 



Dealers in tankage, John Taylor & Co., Trenton, N. J. ; 

 Armour & Co., Chicago (in ten-ton loads). 



The list might be indefinitely extended, but I give the 



