PACING 



FICnSE PAGE 



7. — White fowl against white cloth. Photograph 26 



8. — White-tailed Ptarmigan in winter plumage, on snow. Photograph 26 



9. — White-tailed Ptarmigan in winter plumage, off snow. Photograph 26 



10. — White-tailed Ptarmigan in winter plumage, on snow, but strongly shadowed. Photograph 26 



J 2. ^Photographs of the flat skins of birds and mammals 28 



I3-— J 



14— " 



15. — 



, ("Bird-models illustrating the first principles of pattern-use. Photographs ... 30 



17.— J 



18. — Pattern perspective. Diagram 32 



19. — Pattern perspective. Diagram 32 



20. — "I 



[-Nesting American Woodcock. Photographs 32 



22. — Nesting American Woodcock. Photograph 33 



23. — Dead Woodcock, with the counter-shading painted out. Photograph . . . . ^^ 



24. — Dead Woodcock on its side, back -view and front-view. Photographs .... 33 



25. — Nesting Wilson's Snipe. Photograph 34 



26. — Jack Snipe feeding. Photograph 34 



27. — Nesting Whip-poor-will. Photograph 35 



28. — Nesting Whip-poor-will. Photograph 35 



29. — Nesting Nighthawk. Photograph 36 



30; — Nesting Nighthawk. Photograph 36 



31. — Ruffed Grouse walking. Photograph 37 



32. — Nesting Ruffed Grouse. Photograph 37 



33. — Nesting Ruffed Grouse. Photograph 40 



34. — Dead Ruffed Grouse on its side, back -view. Photograph 40 



35. — Dead Ruffed Grouse on its side, front-view. Photograph 40 



36. — Bit of Great Homed Owl's wing, and bit of pine forest. Photographs . . - 41 



37. — Stuffed Long-eared Owl in pine-woods. Photograph . 42 



38. — Stuffed Long-eared Owl among evergreen twigs. Photograph 42 



39. — ^White-tailed Ptarmigan in transitional plumage. Photograph 44 



40. — White-tailed Ptarmigan in summer plumage, nesting. Photograph 44 



41. — ^White-tailed Ptarmigan in summer plumage, nesting. Photograph . . . . 44 



42. — ^White-tailed Ptarmigan in summer plumage, with chick, among rocks. Photograph . 44 



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