Contents. xi 



CHAPTER XI. 



CLASS 4. AVES (BIRDS). 



PAGB 



General Characters Feathers and Feather Tracts Skeleton- 

 Muscles Digestive Organs Heart and Lungs Eye- 

 Eggs 52 



CHAPTER XII. 



CLASSIFICATION OF BIRDS. 



Sub-class i, Ratidae Sub-class 2, Carinatae Order i, Psittaci 

 or Parrots Order 2, Coccygomorphae or Cuckoos Order 

 3, Pici or Woodpeckers Order 4, Macrochires or Swifts 

 and Humming-Birds Order 5, Passeres or Perching Birds 

 Order 6, Raptores or Birds of Prey .... 62 



CHAPTER XIH. 



CLASSIFICATION OF BIRDS (continued}. 



Order 7, Gyrantes or Pigeons Order 8, Rasores or Scraping 

 Birds Order 9, Grallas or Snipes and Cranes Order 

 10, Ciconias or Storks Order u, Lamellirostres or Ducks 

 and Geese Order 12, Longipennes or Gulls Order 13, 

 Steganopodes or Pelicans Order 14, Pygopodes or 

 Penguins and Auks 69 



CHAPTER XIV. 



CLASS 5. MAMMALIA. 



General Characters Laws Skeleton Teeth Dental For- 

 mulae 74 



CHAPTER XV. 



CLASSIFICATION OF MAMMALS. 

 Order i, Monotremata Order 2, Marsupialia or Kangaroos . 79 



