CONTENTS. 



CHAPTER. PAGE. 



L Methods of Study of Natural History . 23 



II. Classification of Animals . .... 29 



III. Some Interesting Insects, with Notes ou the Class (Insecta) 35 



IV. Crayfish and Crabs {Crustacea) 54 



V. Sawfish, Rays, Sharks, and Their Allies, with Notes on Deep- 

 sea Fishes (Elasmohranchii, ete.) . . . .64 



VI. Sea Horses and Eels (Hippocampidce : Anguillidm) . 82 



VII. Frogs, Toads, Newts, and other Amphibians (Amphibia) . 91 



VIII. Some Observations on Lizards (Lacertilia) . . 108 



IX. Protective Coloration in Snakes, with other Notes about Them 



(Ophidia) ....... 130 



X. Turtles and Tortoises (Chelonia) . 146 



XL Alligators and Crocodiles (Crvcodilia) 156 



XII. Grebes, Loons, and Auks (Pygopodes : Alcrr) . 164 



XIII. Gulls and Their Allies (Longipennes) . . 183 



XIV. Pelicans and Their Relatives (Steganopodes) . . 195 



XV. Meadow-larks and Partridges (genus Sturnella : Perdicince) . 204 



XVI. American Vultures. (Superfamily Cathartoidea.) (Family 



Catharlidie.) ...... 221 



XVII. Some of the Owls of the United States (Slriges) . 232 



XVIII. The Carolina Paroquet and other Notes . 250 



XIX. The United States Cuckoos (Family Cuculida) . . 260 



XX. Woodpeckers : Photographically and Pterylographieally con- 

 sidered (Pici) ...... 270 



