40 Of the Polype'5 Anns, 



Another extraordinary Circumftance is, 

 that a Polype can extend an Arm in any Part 

 of its whole Length, v/ithout doing fo through- 

 out, and can fwell or leflen its Diameter, 

 either at the Pvcot, at the Extremity, in the 

 Middle, or where it pleafes: which occafions 

 a great Variety of Appearances, making it 

 fometimes terminate with a (harp Point, and 

 at other Times blunt, knobbed, and thickeft 

 at the End, in the Figure of a Bobbin. 



There are different Species of Polypes di- 

 ftinguifhable by their Arms, fome having 

 them fliorter and thicker, others more long 

 and (lender: fome rounder, and others flatter. 

 In fome Sorts too there are little Balls or But- 

 tons at the Extremities, more opake than 

 any other Parts of the Arm, which at firft 

 View I was not wholly without fufpedting 

 to be the Creatures Eyes, placed as a Snail's 

 are at the End of its Horns; but my Obfer- 

 vations fince have not afforded any good 

 Reafon to continue fuch an Opinion. 



The Arms of all the Polypes^ I have feen, 

 are white, (except thofe of the green Sort, 

 whofe Arms are alfo green, but paler than 

 the Colour of the Body: ) they are endued 

 with a moil exquilite Senfe of Feeling, can 

 bend either backwards, forwards, fideways, 

 ■ or in any Diredion, as eafily as a Thread; 

 and tho' extended to a great Diftance, and 

 fcarce io thick as a fine Cobweb, are ftrong 

 pnough to feize a Worm much bigger and 



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