THE VORTICELL^. 



47 



The highly magnified view of a single Annulated 

 Vorticella, ( Vorticella convallaria), in the annexed lig- 

 nograph;, very distinctly displays the zones of cilia, and 

 the oflobular stomachs. 



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I =■ ^ '-s^i T^ „ ,/ 



LiGN. 2. — A detached Vorticella convallaria, highly magnified, 

 a. The Cilia. 6, 6, The Globular Stomachs. 



The Yorticellie, like the Monads, increase by self-di- 

 vision. A fissure beo^ins to extend throug-h the longest 

 diameter of the cup, and continues till it is completed, 

 (pi. Ill, fig. 2), the two portions in the meanwhile ra- 

 pidly acquiring the perfect form of the species. A 

 fringe of ciha next appears round the base of each, (pi. 

 HI, fig. 3 «, and fig. 4), and the bodies then separate 

 from the pedicle, which soon perishes. The liberated 



