OFNATURE. 57 



manner mixes with water from ores de- 

 ftroyed. 



The ntuH a faxatilis Syf. Nat. 14. 6. a kind 

 of talky ftone yielding fait in the parts that 

 are turned to the fun, is diffolved into fand, 

 which falls by little and little upon the earth, 

 till the whole is confumed •, not to mention 

 Other kinds of fojfils, Laflly from thefe there 

 arife new fqffils, as we mentioned before, fo 

 that the deflrudion of one thing ferves for 

 the generation of another. 



*TeJiaceous worms ought not to be pafled over 

 on this occafion, for they eat away the hardeft 

 rocks. That fpecies oijhellfijh called the razor 

 Jhell bores thro' ftones in Italy, and hides itfeif 

 within them •, fo that the people who eat 

 them are obliged to break the ftones, before 

 they can come at them. The cochlea F. S. 

 J299. a kind of fnail that lives on craggy 

 roch^ eats, and bores through the chalky 

 hills, as worms do through wood. This is 

 made evident by the obfervations of the ce- 

 lebrated de Geer. 



§. 6. 



