32 Natural Hiftory of 



This Inftance affords us a plain Demonftration that the 

 curious branched CoralHnes, defcribed in the Beginning of 

 this Effay, are of the Fabrick of Animals. From this, the 

 moft fimple, we may trace them back through a Variety of 

 Forms, up to the moft perfc6l of the whole Tribe. 



Here the curious Naturalift may plainly difcover a Polype 

 branching out like the common frefh Water one ot Mr. 

 Tj-embleySy but flrongly fortified by Nature to fupport "itfelf 

 in its turbulent Situation ; tor he will obferve this is defended 

 by a tough horny Covering, and fixed by its Bafe to folid 

 Bodies in the Sea, to fecurc itfelf from the infinite Number 

 of Enemies, that every Moment furround it : Whereas the 

 frelli Water one, being confined to the calm and fheltered 

 Situation of Ponds and Ditches, does not ftand in need of 

 fo neceffary a Provifion for its Defence. 



CHAP. 



