10 BIOLOGY. [Book i. 



inorganic bodies. Is there sufficient reason, however, for distin- 

 guishing between an inorganic world and an organic world 1 

 What are the dissimilar qualities of these two grand groups? 

 This is what we propose to examine in the following 

 chapters. 



[JTote. — When in this chapter atoms are spoken of as 

 full, it is in the sense of a plenum excluding a vacuum. — 

 Tbanslatoe.] 



