86 



JOURXAL OF ECOXOMIC EXTOMOLOGY 



r^'oi. 9 



Accordingly the writer in cooperation with Mr. Elwood Douglas/ 

 County Agent for Atlantic County, Ncav Jersey, set out to test various 

 repellents and deadly substances by keeping certain plots covered with 

 them throughout the period of danger. 



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Fig. 8. Diagram of experimental plots 



iMr. Douglas secured the place for work, helped to make the application and to 

 keep a record of the results. 



