STUDY ï. 



S9 



clafles, have charaâ:erized fome of them by the 

 name of the plant on which they Hve ; fuch are the 

 caterpilhir of the tithymale, and the filk-worm oF 

 the mulberry. But 1 do not believe there is a 

 lingle animal which deviates from this plan, not 

 even excepting the carnivorous. Though the life 

 of thefe laft appears to be, in fome meafure, in- 

 grafted on that of the living fpecies, there is not 

 one among them, but what makes ufe of fome fpe- 

 cies of vegetable. This is obfervable, not only in 

 dogs, which feed on the grafs that bears their 

 name, and in wolves, foxes, birds of prey, which 

 eat the plants denominated from the names of the 

 refpeftive animals, but even in the fifhes of the 

 Sea, which are entire ftrangers to our Element. 

 They are attracted, at firft, to the banks, by in- 

 feds, whofe fpoils they colleft, which eftablifhes 

 between them and vegetables, intermediate rela- 

 tions ; afterwards by the plants themfelves, for 

 mod of them come to fpawn on our coafts, only 

 when certain plants are in flower, or in fruit. If 

 thefe happen to be deflroyed, the fifties vifit us no 

 longer. 



Denis, Governor of Canada, relates, in his Na- 

 tural Hiftory of North America *, that the cod, 

 which, in fhoals, ufedto frequent the coafts of the 



f Vol. II. chap, S2. page 350. 



Ifland 



