GLIMPSES OF ANIMATED NATURE. 



CHAPTEB I. 



OLASSIEIOATION OP ANIMALS. 



Animated Nature is separated into two principal Divi- 

 sions — Vertebrates and Invertebrates, or those having a skeleton 

 and red blood, and those having no skeleton and white blood 

 These are again divided into Classes, of which there are four in 

 the first, and five in the last division. Under Vertebrates we have 

 Mammak and Birds, warm-blooded, with Heptiles and Fishes, 

 cold-blooded animals; while the Invertebrates comprise Insects, 

 Crustacea, MoUuscs, Worms, and Zoophytes. 



These Classes are divided into a larger or smaller number of 

 Orders, which are again subdivided into Genera, and, still further, 

 into Species. But, as it is not the design of this work to enter 

 more deeply into the subdivisions of the animal kingdom than 

 the limited attainments of juvenile students will permit them tc 

 follow, the arrangement will be confined to the Division, Class, 

 Order, and Sub-order, under which each animal may be ranked, 

 leaving to very profound treatises the task of instructing them 

 how to make a more elaborate and minute classification. 



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