AMCEBA 



13 



which it shows is into cell-body and nucleus. The cell-body 

 forms by far the greater part of the organism, and the 



D. 



PIG. 2. Amoeba. 



A, S. I he game individual in two phases of active movement, showing change of form. 



C. Another specimen, of a different species. Note the numerous short projections at 



the hinder end due to contraction, while at ect. the commencement of a new pseudo- 

 podium is indicated by a thickening of the ectoplasm. 



D. A specimen with two nuclei. 



E. Diagram of reproduction by simple fission. 



c.v. Contractile vacuole ; ect. ectoplasm or ectosarc; end. endoplasm or endosarc ; f.p. 

 food particles; f.v. food vacuole; nu. nucleus ; psd. pseudopodium. (The arrows 

 show the general direction in which the animal is moving.) 



protoplasm of which it is composed is often distinguished as 

 cytoplasm. 



