U4: MARVELS OF POND-LIFE. 



and glistens as it catches the light. Some swim 

 rapidly with a rollicking motion, while others twist 

 themselves into all manner of shapes. Now, the 

 once delicate spindle is oddly contorted, now it 

 swells out in the middle, like a top, and now it 

 rolls itself into a ball. The drawings will afford 

 some idea of these protean changes, hnt they mnst 



— a, motile; and b, resting condition of Kuglcnne. 



be seen before their harlequin character can be 

 thoroughly appreciated. Some of the specimens 

 exhibit delicate lines running lengthwise, and taking 

 a spiral twist as the creature moves about; but in 

 none can any mouth be discerned, and their antics, 

 although energetic and comical, afford no certain 

 indications of either purpose or will. What are 

 they? animals or vegetables? or something betwixt 

 and between? 



The first impression of any casual observer would 

 be to declare in favour of their animality ; but before 

 this can be settled, comes the question, Avhat is an 

 animal, and how does it differ from a vegetable? 



