" Natural History, then, should be based on what is called a System of Nature; 

 or a great Catalogue, in which all beings bear acknowledged names, may be recog- 

 nized by distinctive characters, and distributed in divisions and subdivisions them- 

 selves named and characterized, in which they may be found." — Cuvier's Animal 

 Kingdom, Intro. 15. 



"And after all, what does it matter to science that thousands of species, more or 

 less, should be described and entered in our systems, if we Icnow nothing about 

 them?" — Agassiz's Nat. Hist. U. S.,\. 57. 



(iv) 



