Of the Polype^i Body, 29 



tangles in the delicate Arms of the Polype^ 

 prevents their Motion, and difables them 

 from taking their Prey. 



When a Polype extends in Water, its Bo- 

 dy commonly feems fmooth and flippery, 

 and has a good deal the Refemblance of a 

 Snairs; but on fome there are feveral white 

 protuberant Subftances ftanding out from the 

 Sides, and appearing pointed and irregular. 

 Others have a remarkable dark Spot acrofs 

 the Body, efpecially when not quite empty. 

 Both thefe Cafes are reprelented by the Fi- 

 gures A and B, 



Permit me, Sir, for my Readers fullef 

 Information, to add your Account of the Po- 

 lype^ from the Philojophical Tranfa5Iio?is^ 

 N''.469. Page 424. Your Words are Thefe; 

 " When moft contracted, it looks like a 

 *' little Ball, from one Part of which rifes 

 *' a fmall Knob, not unlike what is com- 

 '' monly feen at the Head of a Lemon : This 

 ^- is the Tail, and upon this the Infedl, in 



'' this 



