beryllium, while the fourth pair repeats the second, with the ovoids
re-arranged. The internal divisions of the double sphere of the central
globe are the same as in calcium, but the contents differ. The "cigars" in
the external segments are replaced by seven-atomed ovoids (7 _h_)--the
iodine ovoids--and the external segments contain five-atomed triangles (7
_i_). Thus 1,568 atoms have been packed into the beryllium type, and our
wonder is again aroused by the ingenuity with which a type is preserved
while it is adapted to new conditions.

STRONTIUM: 4 funnels of 368 atoms 1472
Central globe 96
----
Total 1568
----
Atomic weight 86.95
Number weight 1568/18 87.11
The corresponding group, headed by oxygen--oxygen, chromium, molybdenum,
wolfram and uranium--offers us another problem in its first member.

OXYGEN (Plate VIII, 4). This was examined by us in 1895, and the
description may be reproduced here with a much improved diagram of its very
peculiar constitution. The gaseous atom is an ovoid body, within which a
spirally-coiled snake-like body revolves at a high velocity, five brilliant
points of light shining on the coils. The appearance given in the former
diagram will be obtained by placing the five septets on one side on the top
of those on the other, so that the ten become in appearance five, and thus
doubling the whole, the doubling point leaving eleven duads on each side.
The composition is, however, much better seen by flattening out the whole.
On the proto level the two snakes separate and are clearly seen.