INDEX. 
[77] 
Gobat, Rev. Samuel, statement of, 51. 
Gomphoceras sbastanns, [25]. 
GoruUus, 2C9. 
in Anabrus, ]66. 
Government's aid in the locust question, 275. 
Graham, Day, statement of, 2. 
Great American Desert, characteristic of, 284. 
Great Basin area of permanent region, 296. 
Grama grass, 276. 
Grazing', advantages of, 28. 
Green River Basin, 284. 
Srillus migratorius, injury done by, near the river 
Gambia, [G3l. 
Gryllus grogarius, 44, 49, 63. 
italicus, 45. 
migratorius, 43, 4% 46, [63]. 
tartaricus, 45, 64. 
Gulls devouring western crickets in Utah, 166. 
H. 
Hair-worms in Auabrns, lfi#. 
Califomian locusts, 269. 
Hamilton, James, statement of, 51. 
Hasselquist, statement of, 42. 
Hatching, meteorological conditions of, 135. 
Head of Anabrus, 170. 
Heat, effect of, 109, 115. 
Height at which swarms move, 98. 
Hesperotettix, [24]. 
Hilton, H. It., statement of, 303. 
Hippiscus lineatus, 259. 
Histology of Anabrus, 183. 
brain of locust, 227. 
cricket, 183. 
locust, 183. 
Howes, Stoven, on destruction of locusts, 8. 
Humble-bee, 265. 
Humboldt, A. von, statement of, 68. 
Hungary, locusts in, 35, 36, 38, 39, 40, 54. _ , 
Hunter, Sir John, on air-sacs and respiration in in 
sects, 178. 
I. 
Idaho, cricket in, 164. 
locust flights in, 1877, 101. 
1878, 102. 
locusts in, 1878, 5 
Indian Territory, locust flights in, 1877, 160. 
1878,162, [61]. 
locusts in, 1878, 2. 
Indians, crickets used as food by, 166. 
Insects, air-sacs of, 178. 
brain of, 235. 
respiration in, 178. 
Invading swarms defined, 74. 
Invasions bv lucusts, periodicity of, 55, 56. 
direction of, 74, 75, 77. 
modified by agriculture, 19, 20. 
of Algiers, direction of, 65. 
of Europe, direction of, 63, 64, 65. 
origin of, 62, 63. 
origin of, 20. 
theories of, 75. 
Iowa, locust flights in, 1877, 160, [20, 29]. 
1879, 162. 
ravages in, 1878, 1. [29]. 
Irrigable land in the "West, 313. 
Irrigation, advantages of, 19. 
cost of, 310. 
effect of, 23, 24, 310. 
how to accomplish, 21. 
methods of, 315. 
necessity of, 21,307. 
report on, by H. Gannett, 310. 
Ischnoptera, [28]. 
Italy, locusts in, 34, 36, 37, 39, 40. 
J. 
Jackson, J. G., statement of, 48. 
Jobson, Richard, statement of, 89. 
Joel, statement of, 41. 
Johnson, B. F., on ravages of western cricket, 165. 
Jollett, W. K., statement of, 1. 
Kefferstim, statement of, 40, 55, 62, 82, 102, 103, 105. 
Ktrby, statement of, 102. 
Koerte, statement of, 41. 
Koppen, F. T., on burning, 18. 
on invasions, 35. 
statement of, 31, 32, 37, 40, 41, 55, 56, 
57, 59, 60, 62, 63, 64, 78, 83, 85, 88, 99, 
101, 102, 110. 
Kohl, statement of, 97, 100. 
Krauss, Dr. Herman, statement of, 52, 61. 
Kansas, locust flights in, 1877, 160. 
1878, 162. 
ravages in, 1878, 2. 
LaUemant, M. G., statement of, 50, 78, 86, 90, 96. 
Larra tarsata, 270. 
Lee, John, statement of, 12. 
Lefebvre, statement of, 42. 
Lemmon, J. G., on egg-parasites, 263. • 
on locust ravages in California in 
1878, 246. 
on locust ravages in California in 
1S79, 255. 
Lemmon, "W. C, 263, 264, 269. 
Limits of migrations, 56, 58, 68. 
changes in, 59. 
southern, of the distribution of the Rocky 
Mountain locust, 156. 
Literature concerning destructive locusts, 33. 
Lithuania, locusts in, 36, 38. 
Livy, statement of, 33. 
Local flights, 79. 
defined, 79. 
differences in, 80, 81. 
of other species, 82. 
Locust, air-sacs of, 178. 
air-tubes of, 179. 
areas of permanent distribution of, oo. 
barriers against, 55. 
brain of, 223. 
destruction in permanent region, 15. 
effect of, 
19. 
of, aided by agricultural popu- 
lation, 21-25, 28. 
distribution of, 33. 
effect of invasion of, on settling of perma- 
nent region, 19. 
effect of, on settlement of temporary re- 
gion. 27, 28. 
eggs, destruction of, 275. 
development of, 199. 
fat bodv, 197. 
flights,' 1877-'79, 160, [4, 29]. 
gizzard, 209, 211. 
hairs, 187. 
heart, 196 
histology of, 183. 
increase of, affected by climate, 30. 
in embyro, 236. 
invasions, 27. 
near Salt Lake, 24. 
means of fighting, 9. 
microscopic anatomy of digestive canal, 
185, 208, 219. 
migrations in Europe, 62. 
migratory character of, 57. 
mind of, 223. 
muscles, 195. 
organs of sense, 189. 
ovary, 198. 
permanent breeding grounds of, 56, 160, 
163. 
problem, relation of, to condition of coun- 
try, 54. 
to the inter-montane 
area, 23. 
proventriculus, 211. 
ravages, chronology of, 1. 
in 1878, 1. 
rectum, 218. 
relation of, to agriculture and settlement 
of Territories, 14. 
remedies against, 16-22. 
skin, 186, 188. 
spermatozoa, 205. 
stomach, 212. 
testis, 203. 
the Rocky Mountain, in 1879, 10. 
trachese, 191. 
urinary tubes, 222. 
