PROTOZOA OR SIMPLEST ANIMALS. 5 



animal or vegetable kingdom, or as being in an intermediate position. High Wall 

 In some phases of their life-history, Mycetozoa exhibit characters ^^^^^ ^^ 

 attributed to vegetable organisms ; in other phases, again, they Gallery. 



Fig. 3. 



Clathrulina elegant, the Latticed Sun- Animalcule. 

 Magnified 350 diameters. 



resemble undoubted animal organisms. One of the best known 

 forms is Fuligo septica, which creeps over the surface of tan-pits. 

 The creeping "plasmodium" develops masses of cysts known as 



