AMCEBA 



"3 



plasm is drawn forward Over the back, being lifted up 

 behind the animal and laid down in front. Where it is in 

 contact with the ground its stickiness causes it to adhere. 

 All this can be seen by dropping minute particles of soot 

 on to the back of the animal. They are found to stick 

 to the surface, pass forwards till they reach the ground in 



Fig. 69. — Successive changes in shape of an individual of Antieba 

 proteus, drawn at intervals of two minutes. 



front of a pseudopodium, and then remain stationary while 

 the animal moves forwards over them, till they come to lie 

 at its hinder end, when they are lifted and carried forwards 

 again over the back. An indiarubber bag filled with water 

 and rolled forward over a flat surface illustrates well the 

 movement of Amoeba. During the movements the contents 

 of the endoplasm — nucleus, food particles, etc. — are carried 

 about freely from place to place in the body, but the con- 



