94 



upon its multiplication it may, in Southern Illinois, "overpass the 

 limit of insignificance before another year." Reference to report 

 of injuries in August Crop Report. 



Hunt, Thomas F. — Partial Bibliography of Indian Corn Insects. 

 The Chinch Bug. (Miscellaneous Essays on Economic Ento- 

 mology, etc., pp. 112-116.) 



Partial bibliography of chinch bug. 



1887. ' 



Forbes, S. A. — Insects affecting Corn. [Extract from lecture before 

 Farmers' Institute, Champain, 111., Feb. 3, 1887.] (Prairie 

 Farmer, Feb. 26, March 5, and [The Mission of Entomol- 

 ogy] March 26, 1887.) 



Tracing the effect of the development of agriculture in Illinois 

 upon the various classes of corn insects, the important differences 

 seem chiefly due to two causes; the cessation of the prairie fires of 

 the Indians and the general substitution of corn for the prairie 

 grass. In the face of these autumnal fires no insect which by its 

 habits was thus exposed to great diminution could possibly main- 

 tain itself, unless, like the chinch bug and army worm, it had 

 a high rate of multiplication. Such insects inevitably became the 

 worst pests of agriculture. 



J[ohnson], B. F.— [Note from Champaign Co., 111., Mar. 9, 1887.] 



Yery heavy rains in southern part of the State. Wheat on light 

 clays materially damaged by chinch bugs last fall. 



Forbes, S. A. — The Chinch Bugs. (Greenville, Bond County [III.] 

 Advocate, March 24, 1887.) 



Says to newspaper reporter that chinch bugs in the county seem 

 to have come through the winter in good condition, and that unless 

 the weather should prove unfavorable they wiU probably do much 

 damage. He urges burning over headlands and grassy tracts 

 where they are collected in their winter quarters. 



Forbes, S. A. — The Chinch Bug in Southern Illinois. (Circular, 

 from Office State Ent. 111., Champaign, April 15, 1887. Re- 

 printed in Prairie Farmer April 30, 1887.) 



Danger of chinch-bug ravage has by no means passed. Where 

 corn was generally destroyed last year, the sec(^nd brood was cut 

 short for lack of food; but Avliere the damage was less serious the 

 bugs have hibernated in threatening numbers. No unusual nat- 

 ural check upon their incr(?ase has been detected. (Juick, stimu- 

 lating fertilizers are reconimend(Hl for infested small grain not ab- 

 8()lut(ily ov(3rwhelme(l l)y attack, and a formula furnished by the 

 chemical department of the University is given for trial; viz., "cue 

 hundred pounds each of nitrate of soda, 8uperphos])hates, and muri- 

 ate or sulphate of j)otaHli, to be thoroughly niixtHl, and sown at the 

 rate of from 150 to 300 pounds to the Jicn?," the mixture costinLT 



