226 



INSECTS IXJURIOUS TO STAPLE CROPS. 



the only ones fatal to it are preparations of its own food — 

 tobacco. A solution of one part of ''Xikoteen" to sixty 

 of water is a very satisfactory remedy. This insecticide 



Fig. 126. — The Suck-liy {Dicyphus minimus), a, uewly hatched; 

 b, second stage; c, nymph; d, adult; e, head and beak from 

 side — enlarged. (After Howard, U, S. Dept. Agr.) 



is a concentrated solution of nicotine and is manufactured 

 by the Scabcura Dip Co., Union Stock Yards, Chicago, 

 111. It should be sprayed over the plants, using a bent- 



