List of illustrations. 



Figure 1.— The Ari'liicopteryx, . 



Figure 2. — Ground Beetle, . 



Figure 3. — Cutwonu, .... 



Figure 4. — Noetuid Moth, . 



Figure 5. — Fly and its Larva, 



FKiURE 6. — Chestnut Beetle or Weevil, 



Figure 7. — Caterpillars, tlie Larvie of Buttertlie; 



Figure 8. — Pupa- or Chrysalids, . 



Figure 9. — Predaceous Beetle, the Lion Beetle or Caterpi 



Figure 10. — Predaceous Beetle, a Tiger amont- Insects, 



FiciURE 11. — Hymenoijterous Parasite, 



Figure 12. — Host Caterpillar with Cocoons of a Parasite u| 



Figure 13. — Tiger Beetle 



Figure 14. — Chinch Bug, 



Figure 1.5. —Colorado Potato Beetle, .... 



Figure 16. — Hessian Fly, 



Figure 17. — Alimentary Canal of Bluehird, 



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



Figure IS). — Young Cedar Birds less than Three Weeks old. 



Figure 20. — Young Grouse, 



Figure 21. — Young Woodcock, 



Figure 22. — Young Rohins, 



Figure 23. — Young Crows 



Figure 24. — Passenger Pigeon feeding hy Begurgitation, 

 Figure 25. — Chipping Sparrow feeding Young, . 

 Figure 26. — Yellow -throat catching Birdi Aphids, . 



Figure 27. — Western Cricket, 



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



Figure 29. — Warblers de,stroying Plant Lice, 



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



Figure 31. — A Forest Planter, 



Figure 32. —Buffed Grouse, "budding," 



Figure 33. — The Diligent Titmouse, . 



Figure 34.— Winter Tree Guards, 



Figure 35. — Destructive Bark Beetle, 



FiGT-RE .36. — Woodpecker hunting Borers, 



Figure 37. — Larva of the Cecropia Moth, 



liar Hunt 



Bad 



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