CHWEICKART 
M. . 
TABLE OF CONTENTS 
Q 
Introductory. * 
Chapter 1st —The Grape Curculio. 
Its History — Guest-insects, Parasites and Cannibals —Remedy. 13 
Chapter 2nd — The Grape-leap Gall-louse. 
Peculiar to the Clinton and other cultivated varieties of the Frost Grape— Practical inference there- 
from. 21 
' ' Chapter 3rd—The Rose-bug. 
Device for destroying it on Grape-vines.-. -1 
Chapter 4th —The Grape-root Borer. 
Its History — Its scientific nomenclature — Remedies. -4 
Chapter 5th —The Apple-worm or Codling Moth. 
Double-brooded —Practical inference therefrom — Remedies. 27 
Chapter 6th — The Apple-Maggot Fly. 
Occurs at present, only in certain Eastern States on the apple, though it was found long ago in Illi¬ 
nois on the’Crab — Its history. 29 
Chapter 7th —The Rascal Leaf-Crumpler. 
A peculiarly north-western species, not found either east or south — Easily destroyed. 34 
Chapter 8th — The Oyster-shell Bark-louse. 
Its Historv — 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 Cannibal Mites —The Bark louse largely preyed on 
by a minute "Cannibal Mite — Useless and useful remedies. 34 
t Chapter 9th — Harris’s Bark-louse. 
' How it differs from the preceding — The geographical distribution. 53 
Chapter 10th — The Apple-root Plant-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. 55 
Chahter 11th —The Plum Curculio. 
Its Historv —Its peculiar crescent-cut explained —Double-brooded — Its supposed enemies, the 
^ so-called “ Curculio Parasite ” and the Baltimore Oriole — Remedies. 64 
Chapter 12th — The Plum Gouger. 
A Boreg a rounc [ b 0 ie in the Plum, instead of a crescent-cut —How and why it does this —Differs in many 
other respects from the Curculio. 
Chapter 13th —The Plum Moth. 
Its History —Probably a Guest-moth, and therefore not injurious. 78 
Chapter 14th —The Hateful Grasshopper. 
The Rocky Mountains its natural home-Invades in certain years certain neighboring districts, such 
as Texas Missouri, Kansas, Nebraska and Iowa — Lays there millions of eggs, which develop 
into barren Grasshoppers only — Invasion of 1866 —Damage done by the young Grasshoppers 
in the spring of 1867-In Kansas about %th of the fieid-crops and %tl^ ot the garden-crops 
destroved by them — Grasshopper invasions ot A. D. 1820, 1856, 1857, 1864, and 1867 
, Probable results in 1868 of the invasion of 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. 
