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POND LIFE 



the minute animal, although "a single cell, seems to understand 

 that this rule also applies to it. When searching for food its 

 neck moves with wonderful rapidity, darting in and out, twist- 

 ing here and there, shortening, lengthening, just like the 



INFUSORIA 



1. Swan-necked Animalcule. 2. Coleps hirtua, or Barrel Animalcule 

 3. Paramecium. 4. Choetonotus larus. 5. Stylonychia mytilus. 



imaginary snake should do, and then suddenly its body becomes 

 lengthened, and it swims rapidly to another spot. 



Strangely enough, we find that Trachclocerca Olor believes in 

 co-operation, and so usually has a companion. But whether 

 this is really a matter of agreement, or whether it is the result 

 of mere chance, it is difficult to say. 



From personal experience I have never seen two of these 



