in a funnel to
seventy-nine. The central globe is decreased by five, and the prisms have
disappeared. The connecting rod is unaltered.

SILVER: Upper part {12 funnels of 79 atoms 948
{Central globe 15
Lower part same 963
Connecting rod 19
----
Total 1945
----
Atomic weight 107.93
Number weight 1945/18 108.055
(This atomic weight is given by Stas, in _Nature_, August 29, 1907, but it
has been argued later that the weight should not be above 107.883.)

[Illustration: PLATE VII.]

GOLD (Plate VII) is so complicated that it demands a whole plate to itself.
It is difficult to recognize the familiar dumb-bell in this elongated egg,
but when we come to examine it, the characteristic groupings appear. The
egg is the enormously swollen connecting rod, and the upper and lower parts
with their central globes are the almond-like projections above and below,
with the central ovoid. Round each almond is a shadowy funnel (not drawn in
the diagram), and within the almond is the collection of bodies shown in
_e_, wherein the two lowest bodies are the same as in every other member of
the negative and positive groups; the third, ascending, is a very slight
modification of the other thirds; the fourth is a union and re-arrangement
of the fourth and fifth; the fifth, of four ovoids, adds one to the three
ovoids of bromine, iodine and silver; the triangular group is like that in
copper and silver, though with 28 atoms instead of 10 or 21, and it may be
noted that the cone in iron has also 28. The central body in the ovoid is
very complicated, and is shown in _c_, the bodies on each side, _d_, are
each made up of two tetrahedra, one with four six-atomed prisms at its
angles, and the other with four spheres, a pair with four atoms and a pair
with three. We then come to the connecting rod. One of the four similar
groups in the centre is enlarged in _a_, and one of the sixteen circling
groups is enlarged in b. These groups are arranged in two planes inclined
to one another.

GOLD: Upper part
{ 12 funnels of 97 atoms 1164
{ Central ovoid {c 101
{2 d, 38 76
Lower part same