they have gone on with their life functions undisturbed and untroubled.
They have cut them up into still tinier bits, and yet each bit lived on
as a separate animal, performing all of its functions undisturbed. They
are all the same all over, and all the way through. They reproduce
themselves by growing to a certain size, and then separating into two,
and so on. The rapidity of the increase is most remarkable.

Haekel says of the Monera: "The Monera are the simplest permanent
cytods. Their entire body consists of merely soft, structureless plasm.
However thoroughly we may examine them with the help of the most
delicate reagents and the strongest optical instruments, we yet find
that all the parts are completely homogeneous. These Monera are
therefore, in the strictest sense of the word, 'organisms without
organs,' or even in a strict philosophical sense they might not even be
called organisms, since they possess no organs and since they are not
composed of various particles. They can only be called organisms in so
far as they are capable of exercising the organic phenomena of life, of
nutrition, reproduction, sensation and movement."

Verworn records an interesting instance of life and mind among the
_Rhizopods_, a very low form of living thing. He relates that the
_Difflugia ampula_, a creature occupying a tiny shell formed of minute
particles of sand, has a long projection of its substance, like a
feeler or tendril, with which it searches on the bottom of the sea for
sandy material with which to build the shell or outer covering for its
offspring, which are born by division from the parent body. It grasps
the particle of sand by the feeler, and passes it into its body by
enclosing it. Verworn removed the sand from the bottom of the tank,
replacing it by very minute particles of highly colored glass. Shortly
afterward he noticed a collection of these particles of glass in the