X1V CONTENTS. 
CHAPTER XXIV. 
General characters of the Fishes — Scales— Endoskeleton— 
Limbs—Tail—Digestive system—Circulation—Respiration 
—Nervous system—Organs of hearing and smell—Repro- 
duction, . : se : ‘ : : : 227-235 
CHAPTER XXV. 
Orders of Fishes—Pharyngobranchii—Marsipobranchii—Tele- 
ostei—Sub-orders of the ‘Teleostei—Ganoidei—Elasmo- 
branchii—Sub-orders of the Elasmobranchii—Dipnoi, 236-246 
CHAPTER XXVI. 
General characters of the Amphibia—Orders of the Amphibia 
—-Ophiomorpha—Urodela—Anoura—Labyrinthodontia, 247-255 
CHAPTER XXVII. 
General characters of the Reptilia—Circulatory and Respiratory 
systems—Divisions, . 1 : ‘ ; ; “ 256-260 
CHAPTER XXVIII. 
Orders of Reptilia—Chelonia—Ophidia—Lacertilia—Croco- 
dilia—Ichthyopterygia—Sauropterygia—Pterosauria, 261-276 
CHAPTER XXIX. 
General characters of the Class Aves—Feathers—Vertebral 
column—Anterior extremity and Pectoral arch—Posterior 
extremity and Pelvic arch—Digestive system—Respiration | 
—Circulatory system—Nervous system—Organs of the 
senses—Migrations of birds, . ; ; ; - 277-288 
CHAPTER XXX. 
Divisions of Aves— Natatores—Grallatores— Cursores — Ra- 
sores—Scansores—Insessores—Raptores—Saurure, . 289-305 
CHAPTER XXXI. 
General characters of the Class Mammalia—Skeleton—Teeth 
—Dental formula—Digestive system—Heart — Lungs— 
Nervous system—Integumentary appendages — Develop- 
ment—Primary divisions, . , : ‘ : 306-313 
CHAPTER XXXII. 
Orders of Mammalia—Monotremata—Marsupialia—Edentata 
—Sirenia—Cetacea—Ungulata—Hyracoidea—Proboscidea 
—Carnivora—Rodentia—Cheiroptera—Insectivora—Quad- 
rumana—Bimana—Tabular view of the chief sub-divisions 
of the Vertebrata, . i : : ; ; ‘ 314-348 
