66 MAHVELS OF POND-LIFE. 



polyps. On one occasion a glimpse was caught 

 of a liotifer similar in shape to the common 

 Avheel animalcule, but with a yellow inside. Pos- 

 sibly it was the object so beautifully delineated by 

 Mr. Gosse, in his ''Tenby," and described as the 

 "Yellow Philodine," but this must remain in doubt, 

 as it managed to escape before it could be secured. 



260 



Trichodina pediculxis. 



By the 18th. of the month the Yorticellids were 

 much more plentiful, and their changes easily 

 watched; many left their stalks while under the 

 microscope, after which some rushed about like 

 animated and demented hats, others twirled round 

 like tee-to-tums, while others took a rest before 

 commencing their wild career. But the common 

 Yorticellae were not the only or the most interesting 

 representations of their charming family, for upon 

 some threads of conferva were descried several 

 elegant crystal vases standing upon short foot- 

 stalks, and containing little creatures that jumped 

 up and down like 'Mack in the box." These 

 were so minute, that a power of four hundred and 



