88 



over 600 packages of infected material, the greater portion of it going 

 to within a radius of 40 miles of Columbus, though 37 counties have 

 received more or less. (For distribution of chinch bug in Ohio in 1895 

 see map, fig. 1.) It has established itself in the fields in several localities, 

 and we shall certainly derive all benefit possible from its introduction. 

 For infecting boxes I at first used those recommended by Professor 

 Forbes, but later abandoned them, or rather liad them remodeled. 



Fig. l.-Map of Ohio showing district infested by chinch bug in 1894 (from drawing fnrnisbed by Mr. 



Webster.) 



and had additional ones made, 12 inches longer and 2 inches higher. 

 Instead of chalking the sides to prevent the bugs from escaping, we 

 had a strip three-fourths inch wide fastened around the inside of the 

 box, 2 inches from the top. This formed a narrow shelf, which we 

 kept filled with sifted road dust, piling upon it all that would remain, 

 thus forming a steep barrier up which the bugs could not crawl, at 



