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THE EVIDENCES FOR A FOURTH DIMENSION 77<br />
are accustomed to, suffices to explain it. In our space a<br />
symmetrical object must be built up by equal additions<br />
on each side of a central plane. Such additions about<br />
such a plane are as little likely as any other increments.<br />
<strong>The</strong> probability against the existence of symmetrical<br />
form in inorganic nature is overwhelming in our space,<br />
and in organic forms they would be as difficult of production<br />
as any other variety of configuration. To illustrate<br />
this point we may take the child’s amusement of making<br />
from dots of ink on a piece of paper a life-like representation<br />
of an insect by simply folding the paper<br />
over. <strong>The</strong> dots spread out on a symmetrical line, and<br />
give the impression of a segmented form with antennæ<br />
and legs.<br />
Now seeing a number of such figures we should<br />
naturally infer a folding over. Can, then, a folding over<br />
in four-dimensional space account for the symmetry of<br />
organic forms? <strong>The</strong> folding cannot of course be of the<br />
bodies we see, but it may be of those minute constituents,<br />
the ultimate elements of living matter which, turned in one<br />
way or the other, become right- or left-handed, and so<br />
produce a corresponding structure.<br />
<strong>The</strong>re is something in life not included in our conceptions<br />
of mechanical movement. Is this something a fourdimensional<br />
movement?<br />
If we look at it from the broadest point of view, there is<br />
something striking in the fact that where life comes in<br />
there arises an entirely different set of phenomena to<br />
those of the inorganic world.<br />
<strong>The</strong> interest and values of life as we know it in ourselves,<br />
as we know it existing around us in subordinate<br />
forms, is entirely and completely different to anything<br />
which inorganic nature shows. And in living beings we<br />
have a kind of form, a disposition of matter which is<br />
entirely different from that shown in inorganic matter.