PAEAMfE<:iU3I 



287 



fusion, which takes one or two weeks, it will be found to 

 thrive well on corn-meal. 



Since the cilia of Paramoecium are of nearly uniform size 

 and occur all over the body, it has been assignetl to the order 

 Holotricha. In another order of Infusoria the cilia are greatly 



Fig. 27.3 — \ stTlktd \oiti(clH Cirrhesium Grr ith niij^nified. 

 From a photograph of the hving animals. 



enlarged around the mouth, and on account of this difference 

 in size the order is named HeterotricJia. As an example of the 

 Heterotricha, the trumpet-animalcule (Stentor ^) maj' be 

 mentioned. This is found attached to vegetable debris — 

 sticks, stones, water-weeds, and other objects — occurring in 

 pools, ponds, lakes, and sluggish streams. These things should 

 be gathered and placed in an aquarium, when the Stentors, if 

 present, will attach themselves to the glass sides of the vessel. 



' Stentor, a Greek at Troy, known for his loud voice. 



