12 BULLETIN 372, IT. S. DEPARTMENT OF AGRICULTURE. 
fact that after the first year a material reduction can be made in the 
cost for fertilizers if the distilled herb after being well decomposed 
is returned to 4he soil, since, as has been previously stated, this will 
restore much of the nutrient materials removed by the crop. The 
estimated returns show that a profit of about $16 per acre may be 
expected as an average for a 5-year period. 
It has been shown that horsemint can be grown on the lighter types 
of soil at comparatively little expense, and as the cost of transporta- 
tion for the finished product, thymol, is very low, it would seem that 
the production of this crop might be profitable when grown in con- 
nection with other oil-yielding plants for which a distilling apparatus 
is required. 
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WASHINGTON : GOVERNMENT PRINTING OFFICE : 1916 
