TABLE OF CONTENTS. 



Page. 



Letter of Submittal vii 



Preface 1 



Introduction 5 



Literature of forest entomology, 5 — Insects in general, 6 — The beetles and 

 borers, 7— Moths and butterflies, 7 — Gall-flies, 10 — Saw-flies, 12 — Plant- 

 lice, 13 — Bark-lice, 14— Dipterous or two-winged gall-flies, 14 — Insec- 

 tivorous or parasitic insects, 14 — Artificial breeding of parasitic and 

 predaceous insects, 16 — Coleopterous enemies of borers, 18 — Influence 

 of temperature on insect life, 19 — Generations or broods, 19 — Hiberna- 

 tion stage, 23 — Diseases of trees produced by the attacks of insects, 24 — 

 The appearance of unusual new growths, 24 — The origin of repaired 

 parts from representative indefinite growths is very general, 25 — Pre- 

 vention and remedies against forest insects, 27 — Borers in shade and 

 ornamental trees, 27 — Prevention and remedies against timber-beetles 

 and bark-borers, 28 — Insecticides and means of applying them to shade 

 and forest trees, 31 — Paris green and London purple, 31 — Insecticides 

 which act by contact, 34 — Wood ashes and lime, 34 — Coal ashes and 

 coal dust, 35 — Pyrethrum, hellebore, sulphur, 35 — Alkaline washes, 

 potash lye and soda lye, 35 — Alkaline washes, soaps, 35 — Petroleum pro- 

 ducts, kerosene, naphtha, 36 — Kerosene emulsions, 36 — Resin washes, 

 37 — Fumigants, gases, 37 — Hydrocyanic acid gas, 38 — Insecticide ap- 

 paratus, 38 — Devices for applying powders, powder blowers, 38 — The 

 Woodason bellows, 39 — The Leggett Brothers orchard gun, 39 — De- 

 vices for applying liquids, 39 — The pump, 39 — Hose and bamboo ex- 

 tension rod, 42 — Nozzles; the Riley or Cyclone nozzle, 44 — The Nixon 

 or Climax nozzle, 46. 



Chapter I. 

 Insects injurious to the oak 48 



Affecting the roots, 49 — Affecting the trunk, 53 — Affecting the limbs and 

 twigs, 83— Feeding on the buds, 116— Injuring the leaves, 117 — Injuring 

 the seeds (acorns), 215 — ^Insects either habitually or occasionally oc- 

 curring on the oak, 217. 



Chapter II. 

 Insects injurious to the elm -. 224 



Affecting the trunk, 224 — Affecting the leaves, 230 — Insects occasionally 

 preying upon the elm, 282. 



Chapter III. 



Insects injurious to the hickory 285 



Injuring the trunk and branches, 285 — Affecting the bark, 298 — Affecting 

 the leaves, 299 — Affecting the fruit, 326 —Other species occurring on the 

 hickory, 328. 



Insects injurious to the black walnut 329 



Affecting the trunk, 329— Other species occurring on the black walnut, 336. 



Ill 



