Ml C R OS C O P I C A L £ S S A Y S. 



423 



Fig. 24 reprefents a polype that had been turned, endeavouring 

 to turn itfelfback again, the fldn of the anterior part lying back 

 upon the other; the arms varying in their direction, being fome- 

 times turned towards the head, fee Fig. 24 and 26, Plate XXIII, 

 B, at others towards the tail. The anterior extremity e, formed 

 by the edges of the reverfed part a, remained open for fome 

 days, and then began to clofe, new arms fhot out near the old 

 ones, and feveral mouths, were formed at thofe parts where the 

 arms joined the body. 



Fig, 23, 25, 27, 28, reprefent the different changes that took, 

 place in another polype that had been turned infide out, and the 

 different revolutions it went through before it acquired a fixed 

 ftate. a c always (hews the part the polype had. turned back, and. 

 a b the part it could not turn back,. 



A polype, which has Been partly turned back, remains but a 

 little time in that fituation. a, Fig. 28, Plate XXIII. B, the 

 part where the portion it had turned back joined to the body a b ; 

 this became ftrait, and formed, a right angle withab; the fame 

 day another head appeared ate, and feveral arms, a o an, began 

 to moot from the mouth a ; at the other fide of this mouth there 

 were the old arms ad. The next day the portion a c was drawn 

 near the body., and formed an acute angle with it, as at Fig. 25. 

 Fig. 27 reprefents the fame fwelled, after having Swallowed a 

 worm. Four days afterwards it's form had varied confiderably, 

 as may be feen by comparing Fig. 25 and 28, having now one 

 common mouth and two fmall polypes growing on it. 



We 



