xu 



ILLUSTRATIONS. 



27. Foot of Longspur 



28. Head of Swift . 



29. Head of Long-billed Ciuiew 

 00. Bills of Frigate Bird, Hawk, Shrike, Vireo 

 :n. Head of Black Skimmer 

 82. Spoon -billed Sandpiper 



33. Head of Roseate Spoonbill 



34. Bill of Crook-billed Plover 



35. Diagram of Human Eye 



36. The Eye of the Hawk and of the Owl 



37. Head of Goosander (male) . 



38. Head of Goosander (female) 



39. Qead of Hooded Merganser (male) 



40. Head of Red-breasted Merganser (male) 



41. Sharp-shinned Hawk . 



42. Phoebe 



43. Sooty Grouse 



44. Ruffed Grouse 



45. Nests of Eaves-Swallows 

 4G. Purple Martins . 



47. Pine Grosbeak . 



48. Cuckoo 



49. Cow-bird . 



50. Shrike 



51. Sparrow hung up by Shrike 



52. Centipede impaled by Shrike 



53. Robin 



54. Hermit Thrush . 



55. Vireo 



56. White-throated Sparrow 



and 



Bhu: 



bird 



FaciiKj 



Facing 



Fnci 



ng 



Fit cinq 



Map, showing Zoogeograpiiical Divisions of the World 



262 



