142 
N. C. AGRICULTURAL EXPERIMENT STATION. 
Whether the treatment employed here can he expected always to 
give such satisfactory results under all conditions of soil and climate 
can not of course he stated. 
DIAGRAM I. 
Winter, 1908-1909. 
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DIAGRAM II. 
Winter, 1909-1910. 
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DIAGRAM III. 
Winter, 1910-1911. 
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Figure 31. —Showing plan of Station beds and the exact location of affected plants in the 
bed during three seasons. * Diseased plant, o Healthy plant. 
The writers feel justified, however, in stating that theoretically this 
treatment should prove effective and that in the one extremely crucial 
test to which it has been submitted it has proved thoroughly effective. 
They feel justified, therefore, in recommending it to lettuce growers 
who are troubled by this serious disease. 
