57 



roots;" the harmlessness and uselessness of the flea nep^ro bug, 

 of ten found associated with the chinch bug in wheat; the place and 

 time of deposition of the eggs for the second brood; the protective 

 value, under certain certain circumstauces, of the sowing of timothy 

 with wheat in fall; the successful defense of a corn field by plow- 

 ing and ditching against an invasion from small grain; and an im- 

 portant modification of the mode of destruction by burning in 

 spring. 



