THE AMCBBA. 
7 
such as diatoms and desmids, and of portions of thread-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, 
Fig. l.-^Amoeha proteus. a, endosarc; c, ectosarc; b, simple pseudopod; /; 
branched pseudopod; g, food vacuole; d, a pseudopod beginning to grow out, 
e, one a little more developed; food vacuole; h, food-ball; i, nucleus; fc, con- 
tractile vesicle. Magnified 200 diameters. After Brooks. 
until the object is enveloped within the body, which is so 
transparent that the food-object can be seen through it. 
