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tween the different classes of animated beings ; and the 

 analogies or resemblances by which those different classes 

 approach each other and the vegetable kingdom. 



All the varieties of the LOCOMOTIVE power. 



While vegetables remain fixed, subject to every 

 thing that moves, animals enjoy the power of volition, 

 determine, act, and communicate with external objects 

 by means of rheir senses. Many species protect them- 

 selves from injury by force, others by swiftness, address, 

 cunning. While animated beings take their food at 

 intervals and require time to prepare that food for the 

 complicated purposes of secretion and nutrition; while 

 they search for, and select peculiar kinds of food, ve- 

 getables are perpetually receiving nourishment, and can 

 receive only such as is conveyed to them by the different 

 elements. 



The structure and organs, the growth and nourish- 

 ment, perpetuation and decay of nature, in the differ- 

 ent classes of animated beings. 



A short account of the structure and organization of 

 man, the standard of animal perfection, may be followed 

 by a similar account of structure in other living crea- 

 tures. The adaptation of that structure and form to the 

 elements in which they live and move, to their modes 

 of existence, as of quadrupeds to the earth, fowls to the 

 air, fishes to the sea, amphibious animals to land and 

 water, reptiles to their ways of life, &c. may all be 

 treated of. 



The connexions of form and structure with the ele- 

 ment, habits, manners and disposition of each class, 

 their respective ranks in the creation, and the circum- 

 stances of their economy and life. 



The functions necessary to the existence of animated 

 beings, the action of the brain and nerves. Respiration 

 and the elaborate preparation and circulation of the 

 vital fluid with which respiration is intimately con- 

 nected; the secretion of animal heat, resulting from 



