----
Atomic weight 63.12
Number weight 1139/18 63.277
SILVER (Plate VI, 4) follows copper in the constitution of five of the
bodies enclosed in the funnels. But the triangular group contains
twenty-one atoms as against ten, and three ovoids, each containing three
bodies with eleven atoms, raise the number of atoms 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