the corn; the half -gallon pail used for measuring the seed was tested 

 and found to hold just that amount; and the bottle used to 

 measure out the mixture, said to have been obtained from the drug- 

 gist as a 4-ounce bottle, and identified by Mr. Zook and Mr. and Mrs. 

 Lindblad, still retained the odor of the oil. On testing it, I found it to 

 be a 6-ounce bottle. The treatment, so far as I can see, was according 

 to the prescription except that eighteen ounces of the mixture, instead 

 of twelve ounces, was evidently used with each four gallons of corn. 



"The following is an outline of the conditions found in the 

 separate plots of treated and untreated corn. 



"Plot No. 1. Twelve rows planted with untreated seed. Four 

 hundred hills examined, of which nine were vacant. Average number 

 of plants to the hill, 3.19. Thirty-one per cent of the hills were in- 

 fested by ants, and root-lice were present in 80 per cent of these, or in 

 25 per cent of the whole four hundred. 



"Plot No. 2. Ten rows planted with treated seed. I'our hundred 

 hills examined, 112 of which were vacant. Average number of plants 

 to the hill, 1.32. Fifty-six per cent of the hills were infested with 

 ants, and 72 per cent of these, or 40 per cent of the whole number, 

 contained root-lice. 



"Plot No. 3. Twelve rows planted with untreated seed. Four 

 hundred hills examined, two vacant. Average number of plants to the 

 hill, 3.03. Twenty-seven per cent infested with ants, and 85 per cent 

 of these, or 23 per cent of the whole number, by root-lice. 



"Plot No. 4. Twelve rows planted with treated seed. Four hun- 

 dred hills examined, 178 vacant. Average number of plants to the 

 hill, 1.51. Sixty-one per cent infested with ants, and 84 per cent of 

 these, or 51 per cent of the whole number, with root-lice. 



"Plot No. 5. Fourteen rows planted with untreated seed. Four 

 hundred hills examined, five vacant. Average number of plants to 

 the hill, 3.28. Thirty-five per cent injured by ants, and 81 per cent of 

 these, or 28 per cent of the whole number, infested l)y root-lice. 



"Plot No. 6. Fourteen rows planted with treated seed. Four 

 hundred hills, 129 vacant. Average number of plants to the hill, 1.07. 

 Fifty per cent infested by ants, and 69 per cent of these, or 34 per cent 

 of the whole number, infested by root-lice. 



"Plot No. 7. Fourteen hills planted with untreated seed. Four 

 hundred hills, one vacant. Average number of plants to the hill, 3.24. 

 Twenty-nine per cent infested with ants, and 74 per cent of these, or 

 21 per cent of the whole number, infested by root-lice. 



"Plot No. 8. Fourteen rows planted with treated seed. Places 

 for 400 hills, 248 vacant. Average number of plants to the hill, 1.03. 



