22 HINTS ON SOILS AND FERTILIZERS 
phorus, potash and, especially in the humid cli¬ 
mates, calcium, or lime. A farmer who is 
anxious to find out just what elements his soil 
lacks, can procure a small amount of these ele¬ 
ments, and spread them over a small plot of 
ground in his field, and then note the results 
on the crop being raised in this plot. If this 
material cannot be secured from some local 
fertilizer dealer, the farmer can probably se¬ 
cure this material through the county agricul¬ 
tural agent, or from his State agricultural col¬ 
lege at little or no cost, especially when it is 
made known that it is for experimental pur¬ 
poses. Following is a plan of testing that has 
been found very convenient: 
