90 Mr. E. R. Lankester on the Zoological 
itself eminently conspicuous;" and at the same time their 
ints of agreement with Coelenterata, which he enumerates, 
‘entitle them," he says, “in a natural and morphological 
system of classification, to be ranked as the highest represen- 
tatives of the Protozoa.” hy, * viewed in this light,” the 
Coelenterata themselves exhibit greater agreement with the 
Protozoa than with themselves as usually viewed! And it 
is not difficult thus to view all organisms as Protozoa, since 
the common descent of organic beings from unicellular 
forms is exhibited in all by a more or less cellular structure, 
many of the cells in all cases agreeing closely with certain 
free-living amceboid and flagellate forms. The histological 
differentiation of the Spongiade is not so great as in many 
Ccelenterata* ; but it is still carried so far that it would be as 
iade to the Protozoa rather than to the Coelenterata makes 
: d : : 
__* What Mr. Kent calls an essentially Protozoic property in sponges (as 
to toe HAETT t f t p ) is t] proper ty 0 CO jc tissue 
in all animals ; and sponges are largely sarcodie; but this does not make 
them Protozoic. 
