ur
ovoids each with ten atoms within it arranged in three spheres. In the
accompanying diagrams one funnel with its four ovoids is shown and a single
ovoid with its three spheres, containing severally three, four, and three
atoms, is seen at the left-hand corner of the plate (7 _a_). The members of
this group are alike in arrangement, differing only in the increased
complexity of the bodies contained in the funnels. Beryllium, it will be
observed, is very simple, whereas calcium and strontium are complicated.

BERYLLIUM: 4 funnels of 40 atoms 160
Central globe 4
----
Total 164
----
Atomic weight 9.01
Number weight 164/18 9.11
CALCIUM (Plate VIII, 2) shows in each funnel three contained spheres, of
which the central one has within it seven ovoids identical with those of
beryllium, and the spheres above and below it contain each five ovoids (7
_b_) in which the three contained spheres have, respectively, two, five,
and two atoms. The central globe is double, globe within globe, and is
divided into eight segments, radiating from the centre like an orange; the
internal part of the segment belonging to the inner globe has a triangular
body within it, containing four atoms (7 _c_), and the external part,
belonging to the encircling globe, shows the familiar "cigar" (7 _d_). In
this way 720 atoms are packed into the simple beryllium type.

CALCIUM: 4 funnels of 160 atoms 640
Central globe 80
----
Total 720
----
Atomic weight 39.74
Number weight 720/18 40.00
STRONTIUM (Plate VIII, 3) shows a still further complication within the
funnels, no less than eight spheres being found within each. Each of the
highest pair contains four subsidiary spheres, with five, seven, seven,
five atoms, respectively (7 _e_, _g_, _f_). The _g_ groups are identical
with those in gold, but difference of pressure makes the containing body
spherical instead of ovoid; similar groups are seen in the top ring of the
iodine funnel, where also the "hole" is ovoid in form. The second pair of
spheres contains ten ovoids (7 _b_) identical with those of calcium. The
third pair contains fourteen ovoids (7 _a_) identical with those of