and Motions of the Polype. 15 

 It likewife ufes another very extraordinary- 

 Sort of Motion with its Arms and Body, 

 whereby, crawling up the Sides of the Veilel 

 to the Top of the Water, and hanging there 

 by the Tail, with its Body and Head down- 

 wards, it rows itfelf about by the Help of 

 its Arms, in queft, I fuppofe, of Prey. This 

 I have fometimes, tho' not often, feen : but 

 I make no doubt it may frequently do thus 

 in Ditches, withDefign to catch feveral Kinds 

 of Flies and Infers, that are to be found only 

 near the Surface. 



It then appears in this 

 Manner, with an Air-Bub- 

 ble at its Tail. 





It alfo hangs fbmetimea 

 upon the Surface of the Wa- 

 ter with theTail downwards, 

 and appears thus. 



And fometimes it lies along, extending its 

 Body and Arms on the Top of the Water, as 

 fn this Figure. 



This 



