TABLE OF CONTENTS. VII 



CHAPTER XVI. 



Page. 



Effects that generally follow severe locust injury 432 



Contrast between summer and autumn, 432 — No evil without some compen- 

 sating good, 433 — Changes that follow the locusts, 433— Sudden appear- 

 ance of plants and insects not ordinarily noticed, 434 — The White-lined 

 Morning Sphinx, 435 — Tame grasses permanently injured, wild grasses 

 not, 435 — Permanent effects on different plants, 436 — Injury to fruit 

 trees, 436. 



CHAPTER XVII. 



Uses to which locusts may be put 437 



Locusts as food for man, 438-441 — As fish-bait, 441 — Analysis of locust- 

 juices, 442 — They furnish a large quantity of formic acid, and a new oil, 

 442, 443 — Locusts as manure, and as poultry food, 443. 



CHAPTER XVIII. 



Ravages op other locusts in the United States 443 



Ravages of locusts that are occasionally migratory in the Atlantic States, 

 443— Great destruction in past years in New Nngland, 444— The most com- 

 mon species concerned in this work, 446 — Locust flights in Illinois, 446 — 

 The species composing them, 447 — ^The phenomenon exceptional, 447 — Lo- 

 custs ordinarily non-migratory, occasionally become so under favoring con- 

 ditions, 448— Locust flights in Ohio, 449— Importance of discriminating be- 

 tween species, 450— Geographical limits of species, 450 — ^The migratory 

 locusts of the Pacific, 451 — Chronological account of their ravages, 451 — 

 Species concerned, 452— Late injuries in Southern California, 454 — Tab- 

 ular view of locust years, 456^Injury from other non-migratory locusts,. 

 456 — The species concerned, 459. 



CHAPTER XIX. 



Ravages of locusts in other countries 460 



Locust injuries in Central America, 460 — Great destruction in Honduras and 

 Guatemala, 462 — The locusts in South America, 465 — The locusts in the 

 Old World, 467 — Injuries in Germany, 468 — Habits of the European spe- 

 cies, 469 — Injuries in Russia, 470 — Different species affecting the Old 

 World, 471 — Geographical distribution of the European migratory locust, 

 472-476 — Notes on Algerian locusts, 476— Injury in China, 477 — In South- 



APPENDICES. 



APPENDIX I. 



Mr. Allen Whitman's report from Minnesota »....^... [3] 



State of things in spring, 4 — Exertions of farmers, [4] — Different means em- 

 ployed to destroy the eggs, [4] — Effects of temperature and rain-fall on 

 the eggs, [5] — Dates of hatching, [6}- Late hatching, [7]— Progress dur- 

 ing spring, [8]— First winged, [10]— Statistics of damage, [11];. 



