USED IN NATURAL HISTORY. 



159 



Div. I. VEBTEBRATA. 

 Vertebrates : animals characterized by an internal skeleton and a spine. 



Class. 



I. MAMMALIA. 



Mammals: milk-eating ani- 

 mals, when young. 



II. AYES. 

 Birds. 



III. REPTILIA. 



Reptiles. 



IV. PISCES. 

 Fishes.^ 



Sub-class. 

 I. OSSEOUS. 



Order. 

 'I. Bimana. 



2. Quadrumana. 



3. Carnivora. 



4. Rodentia. 



5. Edentata. 



6. Pachyderma. 



7. Ruminantia. 

 . 8. Cetacea. 



' 1. Accipitres. 



2. Passeres. 



3. Scansores. 



4. Gallinae. 



5. Grallce. 



,6. Palmipedes. 



'1. Chelonia. 



2. Sauria. 



3. Ophidia. 



4. Batrachia. 



Example. 



Man. 



Monkeys. 



Hyaena. 



Rabbit. 



Sloth. 



Elephant. 



Cow. 



Whale. 



Eagle. 



Sparrow. 



Parrot. 



Pheasant. 



Heron. 



Duck. 



Tortoise. 

 Lizard. 

 Serpent. 

 Frog. 



-1. Acanthopterygii. Perch. 

 2. Malacopterygii ) pike 

 Abdominales. 



Sturgeon. 



Shark. 



Lamprey. 



Div. II. MOLLUSC A. 



Mollusks : soft, invertebrate, inarticulate animals, often protected by a shell. 

 I. CEPALOPODA. ) ,_ N Cuttle-fish, 



II. PTEROPODA. 



Fin-footed: pteropods. 



.) P"OP<*U- CUo. 



