INFUSORIA. 



459 



Look at this active group, consisting of a dozen or 

 so of glassy vases, shaped something like pears, or ele- 

 gant antique urns, elevated on the extremities of long 

 and very slender stalks, as slender as threads, and 

 about six times as long as the vases. The stalks grow 

 from the midst of the lloccose rubbish attached to the 

 jilant, and diverge as they ascend, thus carrying their 

 lovely bells clear of one another. 



Each vase is elegantly ventricose in the middle, 

 terminating below in a kind of nipple to which the 

 stalk is attached, and above in a short wide neck with 



VOETICELL-E. 



a thickened rim. This last is highly sensitive and con- 

 tractile ; its inner edge is set round with a circle of 

 vibratile cilia, which, -when in full play, produce a 

 pair of small circular vortices over two opposite points 



