1. Booted tarsus of a Robin. 2. Bill of a Robin. 3. Scutellate tarsus of the Brown 

 Thrush. 4. Bill of the Brown Thrush. 5. Bill of a nuthatch. 6. Bill of a creeper. 7. 

 Bill of a warbler; genus Helmintlwphaga ; 8, Dendrceca ; 9, Myiodioctes. 10. Wing-feather 

 of the Cedar-bird, with horny appendage. 11. Head of a Cedar-bird, with crest raised. 

 12. Bill of the Goldfinch. 13. Bill of the Rose-breasted Grosbeak. 14. Bill of the Sharp- 

 tailed Finch. 15. Tail-feathers of the same bird. 16. Bill of a crossbill. 17. Hind-toe 

 and claw of the Snow Bunting. 18. Bill of the Red-winged Blackbird. 19. Bill of the 

 Canada Ja*y. 20. Bill of the Great Crested Flycatcher; (21.) as seen from above. 22. " Mu- 

 cronate" tail-feathers of the Chimney Swift. 23. Head of the Chimney Swift. 24. " Syn- 

 dactyle " foot of the Kingfisher. 25. Bill of the Downy Woodpecker. 26. Raptorial bill 

 (genus Accipiter). 27. Tip of bill, genus Falco. 28. Bill of a pigeon. 29. Tarsus of a 

 pigeon. 



