The Natural Hiflory 



found, by a kind of Lufus of Nature^ 

 in imitation of Shells* 



How nearly I am concerned to re- 

 move this Obftade^before I pafs on any 

 farther to the profecution of my De- 

 fign, any one may prefently fee. For 

 to go about to enquire at what time, 

 and by what means thefe Shells were 

 conveyed out of the Sea to dry Land, 

 when a Doubt hath been moved whe- 

 ther they are Shells or not, or ever 

 belonged to the Sea, without firft 

 clearing this Matter, arid putting it 

 quite out of doubt ; would be lenfe- 

 lejfs and abfurd. In order therefore 

 unto this, I premifH 



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