56 



Cherry, Wild — Continued. 



iniur\ to, bj Canker-worm, xxii, 

 144. 

 by Common Willow-slug, xiv, 

 117. 

 leaves of, mined bj \pplc Ornix, xv, 

 52, 53. 

 by Lithocolletis crataegella, xv. 

 52. 

 Chester, E. E., xvi, 52. 

 Chestnut as toed plant of May-beetles, 

 \\ ii. 4_', 45 ; xviii, 114. 

 of San Jose Scale, xx, 1 ; xxi, 

 13. 

 Chickens as enemies of corn bill-bugs, 



xvi. 71. 



attempt by, to eat Spbenophorus och- 



rcus, xxii, 14. 

 devouring Chaitophorus flavus, xiii. 



45, 46. 

 White-grubs eaten by, xviii, 124. 

 Chick-pea as food plant of Grass-worm, 



xxiii, 82. 

 Chick weed as food plant of Purslane- 

 sphinx, xxi, 155. 

 of Yellow-Black Flea-beetle, xxi, 

 116. 

 Chicory as food plant of Bristly Cut- 

 worm, xxiii, 35. 

 of Noctua plecta, xxi, 105. 

 Chilocorus bivulnerus as enemy of Cot- 

 tonj Maple Scale, xxiv. 115. 

 of San Jose Scale, xx, 19, 20; 

 xxi. 43. 

 Chinch-bug, xiii, 9: Misc. Ess., 5. 112, 

 128; xvi. IX. X. XII; xvii, XV; 

 xviii. 4. 52, 53, 58: xxiii, 3. 4, 5, 

 6, 7, 12, 17, 57-64, 233. 

 a study of the causes of the disap- 

 pearance of an outbreak of, xx, 45- 

 74. 

 agricultural methods of defense 

 against, xv, 96-100. 



nipt to infect, with European par- 

 asitic fungi, x\. 101. 

 bacteria! decomposition of, xx, 52, 

 54. 59, 62, 65, 7.^. 78. 

 disease of, xvi, 45. 46-48, 49. 



cultures ^i bacteria of, xvi, 47. 



56; xvii, 76, 77. 



evidence in proof of, xvii, 74. 



harrier- to migration of, xv. 100; xvi, 



43. 56; xix. 5, 7-15, lOOj xx. 35-44: 



xxiii. 63; xxiv, 30-32, 34-40. 56-57. 



breeding plants of, xv, 93. 94; xvi, 



51, 54. 

 Broom-corn and Sorghum as food 



plants i if, xiii, 40. 

 burning of, in winter quarters, xx. 

 98. 



Chinch-bug— Contin ued. 

 captured by Lasius niger, xviii. 84. 

 comparative cost of various treat- 

 ments for, xxiv, 55, 56. 

 contribution to an economic bibliogra- 

 phy of the, xvi. Appendix, 5-122. 

 crop plant- immune from injury by, 



xv, 95. 97; xxiii. 59. 

 description of different stages of, 



xxiii. 58-59. 



diseases of, xvi, 2. 40. 42, 45, 56; 



xvii, IX. 74-87; xviii, X; xix, 16- 



176; xx. 46. 47. 48, 49, 51, 52, 53. 



also under Disease; and under 



Chinch-hug. bacterial disease of, 



and fungous diseases of. 



ditching against invasion of, xvi. 53, 



56. 

 earlv occurrence of, in Illinois, xvi. 



50. 

 eaten by Common Flower Bug, xxi. 86. 

 effect of. on small grain and Corn, 

 xvi. 50. 

 of submersion on, xx, 51. 

 on, of abandoning Corn as a crop, 



xvi, 5, 54. 

 on, of abandonment of wheat cul- 

 ture, xvi. 6, 54. 55. 

 on, of successive abandonment of 

 corn and wheat culture, xvi, 6. 

 eggs, attempt to infect, xx. 52. 



effect of burial on hatching of, xx. 

 99. 

 of drouth on hatching of, xx, 89. 

 of exposing, to fungi of green 

 muscardine, xx, 91. 

 of white muscardine, xx, 

 89-91. 

 of immersion in water on hatch- 

 ing of, xx. 87. 

 of moist air on hatching of, xx. 



88. 

 of salt on hatching of, xx. 99. 

 temperature experiments with, xx. 

 85. 

 estimates of injuries by, xxiii. 58. 

 of losses in Illinois by, xv, 89; xvi, 

 1. 9. 

 experiment in plowing under, xvi. 45. 

 experimental detail- of midsummer 



measure- against, xx. 38-40. 

 experiments on, with Entomophthora, 

 \x. 91. 

 with ins< xvi, 37-45 : 



xxiv, 40 43. 

 to determine vitality ^\ hibernat- 

 ing generation of, xx, 5 

 with kerosene and salt, and other 

 rep< 11 it riers against, xx. 



44. 



