166 



THE MICKOSCOPE. 



selves to objects by a sucber at tke lower part. Some of them have 

 cilia over their entire bodies, and a good fringe over their gaping 

 mouths, which is a type of their ravenous nature. The prey may be 

 seen in their row of stomachs, as if strung like a strap of beads up and 

 down its interior. They differ from many gluttons by possessing great 

 activity, moving swiftly through the water. They are said to increase 

 both by eggs and self-division. There are many epecies, differing in 

 size, shape, and colour. Usually they are about the hundredth part of 

 an inch in size. When found, they appear a mass of green jelly encir- 

 cling a twig. Often, when swimming, they take the form of a cup, 

 having their tails drawn within their bodies. 



%. 100. 

 1, 2, 3. Hydra, or fresh-water Polyps, attached to the stem of a plast" 4. A group 

 oi Stentor polymor^hns, or Multi-shaped Stentor. 5, 6. Monads, Viviparous and 

 Cloak Monads. 



Bterdor Ccendeus, or Blae Stentor, is remarkable from having a crest 

 extending Jilong its body; it assumes a peculiar shape when swimming, 

 appearing to possess a thick tail nearly one half the breadth and 

 length of its body. 



Upon quitting these animalcules, we may notice this peculiarity, 

 that when they are procured from infusions the first instangea of life 



