TABLE OF CONTENTS. 



Introductory 5 



Chapteb 1st— The Grape Cdrculio. 

 Its History— Guest-insects, Parasites and Cannlbals--Reme(iy 13 



Chapter 2nd— The Gbapk-leaf GALii-LOUSE. 

 Peculiar to the Clinton and other cultivated varieties of the Prost Grape— Practical 

 inference therefrom 24 



Chapter 3rd— The Rose-bug. 

 Device for destroying it on Grape-vines 28 



Chapter 4th— The Grape-root Borer. 

 Its History— Its scientific nomenclature— Remedies 29 



Chapter 5th— The Apple-worm or Codling Moth. 

 Double-brooded- -Practical inference therefrom— Remedies 33 



Chapter 6th— The Apple-Maggot Fly. 

 Occurs at present, only in certain Eastern States on the apple, though it was found 



long ago in Illinois on the Crab--Its history 36 



Chapter 7th— The Rascal Leaf-Crumpler. 

 A peculiarly north-western species, not found either east or south— Easily de- 

 stroyed 42 



Chapter 8th— The Oyster-shell Bark-louse 

 Its History— Loses almost all its organs when only a few days old, and becomes 

 thenceforth as stationary as a cabbage— How it spreads from tree to tree- 

 Mites and their Natural History— Plant-feeding Mites, Parasitic Mites and 

 Cannibil Mites— The Bark Louse largely preyed on by a minute Cannibal 

 Mite— Useless and useful remedies 43 



Chapter 9th— Harris's Babk-louse. 

 How it»differs from the preceding— The geographical distribution 70 



Chapter 10th— The Apple-boot Plakt-louse. 

 Often confounded in Illinois with the true "Woolly Plant-louse"— The differences- 

 Its history— Causes a form of "Rotten-Root"- Its supposed Cannibal foe- 

 Remedies • 73 



Chapter 11th— The Plum Curculio. 

 Its History— Its peculiar crescent-cut explained — Double-brooded -Its supposed 

 enemies, the so-called "Curculio Parasite" and the Baltimore Oriole— Rem- 

 edies 85 



Chapter 12th— The Plum Gouger. 

 Bores a round hole in the Plum, instead of a crescent cut— How and why it does 



this-Differs in many other respects from the Curculio 97 



Chapter 13th— The Plum Moth. 

 Its History— Probably a Guest-moth, and therefore not injurious 105 



Chapter 14th— The Hatefol Grasshopper. 

 The Rocky Mountains its natural home -Invades in certain years certain neighbor- 

 ing districis,such as Texas, Missouri, Kansas, Nebraska andli'Wa -Lays there 

 millions of eggs, which develop into barren Grasshoppers only Invasion of 

 1866 -Damage done by the young Grasshoppers in the springof 1867- InKansas 

 about 'gth of the field-crops and ''gths of the garden-crops destroved by them-- 

 Grasshopper invasions of A. D. 1820, 1856, 1857, 1864, and 1867 Pro'bable results 

 in 1868 of tbe invasion ot 1867 Has never yet come within 115 miles of Illinois - 

 Cannot spread into Illinois as the Colorado Potato-bug has done Reasons why, 

 in all human probability, it can never reach Illinois at all Ill 



