72 ORIGIN OF THE 



temperature of the waters, and the atmosphere, 

 were adapted to mature and sustain. These 

 elementary atoms, being once combined, and 

 endued with life and motion, were governed by 

 fixed and unerring laws, in their organization, 

 and required a uniform temperature for their 

 preservation. And, in order to perpetuate these 

 organizations, under the variable temperature of 

 the earth, Nature has employed a method of 

 keeping up a uniform heat, by endowing each 

 organization with a capacity for sustaining and 

 preserving this uniformity of heat, under all con- 

 ditions of life, and adapted to the requirements 

 of each individual organization. 



Thus, then, each organized plant, or being, 

 was fitted for the place it was to occupy ; and 

 the place it was to occupy was perfectly adapted 

 to its habits or mode of life. The materials for 

 the shell of the Crustacea and testacea were pre- 

 pared for the action of the germ of those animals 

 upon them, and grew with their growth, and 



