| ILLUSTRATIONS IN THE TEXT. |
| FIG. | | | PAGE |
| 1. | Skeleton of Wing of Archæopteryx with Remiges attached. | From ‘Natural Science’ | [4] |
| 2, 3. | Structure of a Feather | From ‘Ibis’ | [5] |
| 4. | Portion of two adjacent Barbs | „ | [5] |
| 5. | Foot of Pelican | From Owen’s ‘Anatomy of Vertebrates’ | [10] |
| 6. | Foot of Perching Bird | „ | [10] |
| 7. | Foot of Kingfisher | „ | [10] |
| 8. | Sternum of Shrike | „ | [13] |
| 9. | Wing of Nestling Opisthocomus | From ‘Natural Science’ | [15] |
| 10. | Wing of Young Fowl of same Age as Fig. 9 (of Wing of Opisthocomus) | „ | [16] |
| 11. | Wing of Adult Opisthocomus | „ | [17] |
| 12. | Wing of Half-grown Ostrich | „ | [17] |
| 13. | Pelvis and Hind Limb of Diver | From Owen’s ‘Anatomy of Vertebrates’ | [19] |
| 14. | Gizzard of Swan | „ | [21] |
| 15. | Syrinx of Raven (Posterior Surface) | „ | [26] |
| 16. | Syrinx of Raven (Lateral View) | „ | [26] |
| 17. | Syrinx of Raven cut open longitudinally | „ | [26] |
| 18. | Song-Thrush (¼ natural size) | By G. E. Lodge | [41] |
| 19. | Throstle’s Nest | From Photograph by R. B. Lodge | [44] |
| 20. | Blackbird’s Nest | „ | [48] |
| 21. | Ring-Ouzel (⅕ natural size) | By G. E. Lodge | [50] |
| 22. | Wheatear (⅓ natural size) | „ | [52] |
| 23. | Stonechat (¼ natural size) | „ | [56] |
| 24. | Redstart (⅓ natural size) | „ | [57] |
| 25. | Redbreast (¼ natural size) | „ | [59] |
| 26. | Nightingale (⅓ natural size) | „ | [62] |
| 27. | Whitethroat (⅓ natural size) | „ | [64] |
| 28. | Blackcap (⅓ natural size) | „ | [67] |
| 29. | Dartford Warbler (⅓ natural size) | „ | [71] |
| 30. | Sedge-Warbler (⅓ natural size) | „ | [80] |
| 31. | Hedge-Sparrow (⅓ natural size) | „ | [84] |
| 32. | Dipper (⅕ natural size) | „ | [86] |
| 33. | Long-tailed Tit (¼ natural size) | „ | [91] |
| 34. | Great Tit (⅓ natural size) | „ | [93] |
| 35. | Crested Tit (⅓ natural size) | „ | [98] |
| 36. | Nuthatch (¼ natural size) | „ | [99] |
| 37. | Wren (¼ natural size) | „ | [102] |
| 38. | Pied Wagtail (¼ natural size) | „ | [104] |
| 39. | Grey Wagtail (⅓ natural size) | „ | [106] |
| 40. | Tree-Pipit (¼ natural size) | „ | [110] |
| 41. | Rock-Pipit (⅓ natural size) | „ | [112] |
| 42. | Red-backed Shrike (¼ natural size) | „ | [114] |
| 43. | Spotted Flycatcher (¼ natural size) | „ | [117] |
| 44. | Swallow (¼ natural size) | „ | [119] |
| 45. | Martin (⅓ natural size) | „ | [121] |
| 46. | Tree-Creeper (⅓ natural size) | „ | [124] |
| 47. | Hawfinch (⅓ natural size) | „ | [130] |
| 48. | Lesser Redpoll (⅓ natural size) | „ | [140] |
| 49. | Bullfinch (⅓ natural size) | „ | [142] |
| 50. | Crossbill (¼ natural size) | „ | [144] |
| 51. | Yellowhammer (⅓ natural size) | „ | [148] |
| 52. | Cirl Bunting (⅓ natural size) | „ | [150] |
| 53. | Reed-Bunting (¼ natural size) | „ | [151] |
| 54. | Chough (⅛ natural size) | „ | [157] |
| 55. | Magpie (⅑ natural size) | „ | [161] |
| 56. | Rooks and Nest | From Photograph by R. B. Lodge | [169] |
| 57. | Raven (¹⁄₁₂ natural size) | By G. E. Lodge | [172] |
| 58. | Skylark (⅓ natural size) | „ | [175] |
| 59. | Nightjar (⅕ natural size) | „ | [180] |
| 60. | Spotted Woodpecker (⅕ natural size) | „ | [182] |
| 61. | Green Woodpecker (⅙ natural size) | „ | [184] |
| 62. | Wryneck (⅓ natural size) | „ | [186] |
| 63. | Kingfisher (¼ natural size) | „ | [188] |
| 64. | Hoopoe | „ | [190] |
| 65. | Cuckoo (⅙ natural size) | „ | [191] |
| 66. | Barn-Owl (⅐ natural size) | „ | [194] |
| 67. | Montagu’s Harrier (⅑ natural size) | „ | [201] |
| 68. | Buzzard (¹⁄₁₀ natural size) | „ | [202] |
| 69. | Kite (¹⁄₁₂ natural size) | „ | [207] |
| 70. | Peregrine (¹⁄₁₀ natural size) | „ | [209] |
| 71. | Merlin (⅛ natural size) | „ | [211] |
| 72. | Kestrel (⅑ natural size) | „ | [212] |
| 73. | Honey-Buzzard (¹⁄₁₂ natural size) | „ | [217] |
| 74. | Cormorant (¹⁄₁₁ natural size) | „ | [218] |
| 75. | Grey Lag-Goose (¹⁄₁₄ natural size) | „ | [227] |
| 76. | Brent Goose (¹⁄₁₀ natural size) | „ | [231] |
| 77. | Barnacle Goose (¹⁄₁₀ natural size) | „ | [232] |
| 78. | Sheldrake (¹⁄₁₀ natural size) | „ | [235] |
| 79. | Wigeon (⅐ natural size) | „ | [237] |
| 80. | Pintail (¹⁄₁₀ natural size) | „ | [239] |
| 81. | Gadwell (¹⁄₁₀ natural size) | „ | [242] |
| 82. | Garganey (¹⁄₁₁ natural size) | „ | [243] |
| 83. | Tufted Duck (¹⁄₁₁ natural size) | „ | [246] |
| 84. | Eider Duck (¹⁄₁₀ natural size) | „ | [251] |
| 85. | Common Scoter (¹⁄₁₂ natural size) | „ | [253] |
| 86. | Goosander (¹⁄₁₂ natural size) | „ | [255] |
| 87. | Red-breasted Merganser (¹⁄₁₁ natural size) | „ | [257] |
| 88. | Rock-Dove (⅐ natural size) | „ | [262] |
| 89. | Turtle-Dove (⅙ natural size) | „ | [263] |
| 90. | Red-legged Partridge (⅐ natural size) | „ | [266] |
| 91. | Partridge (⅙ natural size) | „ | [267] |
| 92. | Quail (⅕ natural size) | „ | [269] |
| 93. | Blackcock (¹⁄₁₀ natural size) | „ | [274] |
| 94. | Capercaillie (¹⁄₁₂ natural size) | „ | [275] |
| 95. | Landrail (⅐ natural size) | By G. E. Lodge | [278] |
| 96. | Stone-Curlew (⅐ natural size) | „ | [282] |
| 97. | Golden Plover (summer plumage) (⅙ natural size) | „ | [285] |
| 98. | Lapwing (⅙ natural size) | „ | [290] |
| 99. | Turnstone (⅕ natural size) | „ | [292] |
| 100. | Grey Phalarope (¼ natural size) | „ | [295] |
| 101. | Woodcock (⅙ natural size) | „ | [296] |
| 102. | Dunlin (summer plumage) (¼ natural size) | „ | [301] |
| 103. | Knot (¼ natural size) | „ | [305] |
| 104. | Ruff and Reeve (⅐ natural size) | „ | [306] |
| 105. | Sanderling (winter plumage) (¼ natural size) | „ | [308] |
| 106. | Greenshank (⅙ natural size) | „ | [312] |
| 107. | Common Tern (⅐ natural size) | „ | [319] |
| 108. | Lesser Tern (¼ natural size) | „ | [321] |
| 109. | Black Tern (⅐ natural size) | „ | [323] |
| 110. | Great Black-backed Gull (¹⁄₁₁ natural size) | „ | [327] |
| 111. | Great Skua (¹⁄₁₂ natural size) | „ | [330] |
| 112. | Stormy Petrel (⅓ natural size) | „ | [334] |
| 113. | Manx Shearwater (⅛ natural size) | „ | [336] |
| 114. | Fulmar (⅑ natural size) | „ | [338] |
| 115. | Great Northern Diver (⅑ natural size) | „ | [340] |
| 116. | Great Crested Grebe (¹⁄₁₀ natural size) | „ | [342] |
| 117. | Little Grebe (⅙ natural size) | „ | [344] |
| 118. | Razorbill (winter plumage) (¹⁄₁₁ natural size) | „ | [346] |
| 119. | Little Auk (⅛ natural size) | „ | [350] |
| 120. | Puffin (⅑ natural size) | „ | [351] |