LIST OF ILLUSTRATIONS. 



PACK 



FIGURE 1. The Archaeopteryx, 5 



FIGURE 2. Ground Beetle, 9 



FIGURE 3. Cutworm, 11 



FIGURE 4. Xoctuid 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 1(5. Hessian Fly, 33 



FIGURE 17. Alimentary Canal of Bluehird, 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 Robins, . 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. Wood pecker hunting Borers 107 



FIGURE 37. Larva of the Cecropia Moth, 110 



