DESCRIPTION OF PLATE III. 119 



FTG. 5. The appearance to the naked eye of thousands of Vorticellse sur- 

 rounding the roots of two or three leaves of the Lemna ; 

 p. 42. 



FIG. 6. A group of three Vorticellse, (Vorticellacampanulata), in various 

 states of contraction. A foreshortened view of the body is 

 shewn in the left-hand figure. 



These animalcules are represented as fed with carmine ; with the ex- 

 ception of the Vorticellae in the upper part of the group fig. 3, which are 

 shewn of their natural appearance, their globular sacs being filled with 

 green matter. 



