2 
GUIDE TO THE CORAL GALLERY. 
High Wall 
Case 
E. end of 
Gallery. 
lobes. The lobes are termed “ pseudopodia ” ( pseudos , false or 
apparent ; pous, foot), because they enable the animal to move 
about. “ In the continual extension and branching of one or more 
of the chief pseudopods,” writes Professor Leidy, “ the Amoeba 
progresses more or less rapidly, the body appearing incessantly 
to exhaust itself in the continual growth and elongation of the 
pseudopods and in the production of new ones, while it is as 
Fig. 1. 
incessantly replenished by the contraction and melting away of 
pre-existing pseudopods.” The little creature is continually chang- 
ing its shape, and hence Rosel, who discovered it in 1755, called it 
“ the little Proteus,” after the monster of the fable. 
When the Amoeba comes in contact with a Diatom, Desmid, or 
other object suitable for food, it envelops and ingests it, and, in 
due time, casts out the indigestible debris. 
