These minute infusorians would glow with the pale gleam of phosphorescence if the water were ruffled.

And it may be asked what advantage, as far as we can see, would it be to an infusorian animalcule—to an intestinal worm, or even to an earthworm—to be highly organized.

These ganglia are the brain of this infusorian.

So that the church grew as grow infusorians and certain worms,—by fissure, by periodical splittings and breakings to pieces, each spontaneous division becoming a new organism.

I shall be glad to learn what you think of Clark's view of sponges being flagellate infusorians; some observers in this country believe in him.