62 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 12' 



gleaned from questionnaire blanks sent to the county agents or county 

 food commissioners in case there were no agents. 



Results of the Survey of 1917 



Was this expenditure worth while? Part of the answer can be found' 

 in the results with the potato aphid. Mr. Houser ran into the worst 

 area of infestation in the first county on his route, and arrangements 

 were at once made for stationing a man in this field for detailed study 

 of the species. Bulletin 317 of the Ohio Station by Messrs. Houser,. 

 Guyton and Lowry, review the results of this effort. County Agent 

 Van Atta reported that spraying demonstrations were conducted with 

 growers whose total plantings aggregated 308,000 plants. By very 

 conservative estimates over 30,000 bushels of tomatoes worth $1 per 

 bushel were saved to this county by proper spraying. Since the Col- 

 lege of Agriculture and the Kentucky Tobacco Product Company 

 each had a representative also assisting the county agent we evidently 

 can claim only part of the credit for this saving; but we need to claim' 

 only one-thirtieth part of it to find payment for the entire state survey 

 and I am very sure none of the workers participating in the aphis fight 

 would put our part in the total result at so low a fraction. As an after 

 result, the publication of this bulletin made possible an intelligent fight 

 against the pest during the season of 1918 and in all likelihood $50,000' 

 is a small estimate of the values conserved the past summer as the 

 direct result of its publication. 



Because we were able to assure our farmers that there were na 

 large areas overrun with Hessian fly and were able to locate the joint 

 worm areas, the survey contributed a good deal toward increasing the 

 wheat acreage in the fall of 1917. The State Department of Agri- 

 culture reported an increase of 10 per cent in acreage and part of this 

 must be ascribed to the fact that our farmers were not fearful of the 

 results if they seeded a few days earlier than usual and were therefore 

 able to use their time to greatest advantage, an important matter 

 when the labor supply on the farms was very short. 



Cost of the Survey in 1918 



In 1918 the work was more thoroughly done than in the preceding^ 

 year. We entered and explored with some care, as previously de- 

 scribed, seventy-three of our eighty-eight counties. The omitted ones 

 were not important wheat-producing counties and were rather difficult 

 of access. One of our surveyors spent twenty-four days in the work,, 

 traveled 1,894 miles, surveyed twenty-four counties and expended for 

 machine hire and maintenance $168.36. An assistant who accom- 

 panied him and also surveyed a route of his own, including five 



