MANURES AND FERTILIZERS. 67 
many cases, but generally the cost of these was 
too much to make their use profitable. The 
value of phosphorice acid was especially shown 
in tests in Alabama, Louisiana, Pennsylvania 
and Vermont; that of nitrogen in Georgia, 
Massachusetts (local), New York and North 
Louisiana; that of potash in Kentucky, New 
Hampshire, New Jersey and Massachusetts 
(general). 
Cotton seed crushed, or cotton-seed meal is 
generally considered to be a most desirable 
nitrogen fertilizer. This used singly or in con- 
nection with artificial fertilizer is recommended 
for the corn crop. The meal may be sowed 
broadcast before planting and harrowed in, 
while the crushed seeds may be plowed under, 
as with stable manure. However, it would be 
better husbandry to feed the cotton seed or 
meal to live stock and use the manure, which 
will contain about all the fertility of the orig- 
inal grain. 
Sea weeds, fish scrap or dead fish, night 
soil and other substances are used for manur- 
ing corn lands in a limited way. Refuse fish 
makes a good nitrogenous manure, and along 
the coast in places is extensively used. 
Green manure offers a valuable means of 
improving the soil for corn-growing in localities 
where the land has been long cultivated. This 
is for the reason that those crops best adapted 
