THE AM(EBA. 



such as diatoms and desmids, and of portions of tliread-like 

 plants, or of animalcules. After selecting its food, as for 

 example a minute plant, it engulfs or swallows it by mov- 

 ing towards the object and gradually closing around it, 





»■ 







jb '^«W*' 



c e 





•i 



y 



Fig, 1. — Amceba prof ens. a, endosarc; c, ectot'arc; 6, simple pseudopod; /; 

 branched pseudopod; g, food vacuole; d, a pseudopod beg-inniug' to grow out, 

 e, one a little more developed ; food vacuole ; h, food-bail ; i, nucleus; fc, con- 

 tractile vesicle. Magnified 200 diameters. After Brooks. 



until the object is enveloped witliin the body, which is so 

 transparent that the food-object can be seen through it. 



