List of Illustrations. 



PAGE 



Figure 1. — The Archaopteryx, ......... 5 



Figure 2. — Ground Beetle, .......... 9 



Figure 3. — Cutworm, . 11 



Figure 4. — Noctuid Moth, 11 



Figure 5. — Fly and its Larva, ......... 14 



Figure 6. — Chestnut Beetle or Weevil, ." . . . . . .14 



Figure 7. — Caterpillars, the Larvte of Butterflies, 14 



Figures. — Pupae or Chrysalids, 15 



Figure 9. — Predaceous Beetle, the Lion Beetle or Caterpillar Hunter, . 18 

 Figure 10. — Predaceous Beetle, a Tiger among Insects, . . . .18 



Figure 11. — Hymenopterous Parasite, ....... 18 



Figure 12. — Host Caterpillar with Cocoons of a Pai-asite ujion its Back, . 19 



Figure 13. — Tiger Beetle, 19 



Figure 14. — Chinch Bug, 27 



Figure 15. — Colorado Potato Beetle, .29 



Figure 16. — Hessian Fly, 33 



Figure 17. — Alimentary Canal of Bluebird, 41 



Figure 18. — Young Cedar Bird on its First Day, ..... 42 



Figure 19. — Young Cedar Birds less than Three Weeks old, . . . 43 



Figure 20. — Yomig Grouse, ......... 43 



Figure 21. — Young Woodcock, ......... 44 



Figure 22. — Young Robins, ......... 44 



Figure 23. — Young Crows, 49 



Figure 24. — Billing, or feeding by Regurgitation, 52 



Figure 25. — Chipping Sparrow feedmg Young, ...... 55 



Figure 26. — Yellow-throat catching Birch Aphids, . . , . .63 



Figure 27. — Western Cricket, 65 



Figure 28. — Gulls saving Crops by killing Crickets, 66 



Fic;uRE 29. — Warblers destroying Plant Lice, ...... 71 



Figure 30. — The Winged Seed of White Pine, 92 



Figure 31. — .\ Forest Planter, 94 



Figure 32. — Ruffed Grouse, " budding," 99 



Figure 33. — The Diligent Titmouse, 101 



Figure .34.— Winter Tree Guards, 104 



Figure 35. — Destructive Bark Beetle, 107 



Figure .36. — Woodpecker hunting Borers, ....... 107 



Figure 37. — Larva of the Cecropia Moth, 110 



