15^ 



MARVELS OF POND-LIFE. 



Attached to a piece of weed were a number of 

 cvlindricul masses of brownish jelly, with rounded 

 tops, and situated in an irregular and very trans- 

 parent sheath, about twice as high as themselves. 

 Presently they all rose up to four times their pre- 

 vious height, put forth a beautiful crown of vibrating 



Vaginicola.— (A, elongated; B, retracted. 



cilia, and opened a sort of trap-door to their in- 

 ternal arrangements. In this position they had 

 a long cylindrical form, gracefully curved, but of 

 nearly equal width from the mouth to the base, 

 and they readily imbibed particles of carmine, which 

 tinged sundry little cavities with its characteristic 



