* * * * *

V.

We must now consider the ways in which the members of the tetrahedral
groups break up, and as we proceed with this study we shall find how
continual are the repetitions, and how Nature, with a limited number of
fundamental methods, creates by varied combinations her infinite variety of
forms.

BERYLLIUM (Plate III, 2, and VIII, 1).

[Illustration]

Beryllium offers us four similar funnels and a central globe, and the
proto-elements consist of these five bodies, set free. The funnel, released
from pressure, assumes a spherical form, with its four ovoids spinning
within it, and the central globe remains a sphere, containing a whirling
cross. On the meta level, the ovoids are set free, and two from each funnel
are seen to be positive, two negative--sixteen bodies in all, _plus_ the
cross, in which the resultant force-lines are changed, preparatory to its
breaking into two duads on the hyper level. On that level, the decades
disintegrate into two triplets and a quartet, the positive with the
depressions inward, the negative with the depressions outward.

CALCIUM (Plate VIII, 2).

The funnels, as usual, assume a spherical form on the proto level, and
show, in each case, three spheres containing ovoids. These spheres, still
on the proto level, break free from their containing funnel, as in the case