List of illustrations. 



FAQE 



Figure 1. — The Archseopteryx, 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 Larvae of Butterflies 14 



Figure 8. — 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 Parasite upon 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. — Young Grouse, 43 



Figure 21. — Young Woodcock, 44 



Figure 22. — Young Rohins, 44 



Figure 23. — Young Crows, 49 



Figure 24. — Passenger Pigeon feeding by Regurgitation 52 



Figure 25. — Chipping Sparrow feeding Young 55 



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



Figure 27. — Western Cricket 65 



Figure 28. — Gulls saving Crops by killing Crickets 66 



Figure 29. — Warblers destroying Plant Lice, .:.... 71 



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



Figure 31. — A 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 



