" In this
case the funnels radiate from a central globe, formed of two intersecting
tetrahedra, with "cigars" at each point enclosing a four-atomed globe.
GERMANIUM: 8 funnels of 156 atoms 1248
Central globe 52
----
Total 1300
----
Atomic weight 71.93
Number weight 1300/18 72.22
TIN (Plate XVI, 3) repeats the funnel of germanium, and the central globe
we met with in titanium, of five intersecting tetrahedra, carrying twenty
"cigars"; the latter, however, omits the eight-atomed centre of the globe
that was found in titanium, and hence has one hundred and twenty atoms
therein instead of one hundred and twenty-eight. Tin, to make room for the
necessary increase of atoms, adopts the system of spikes, which we met with
in zinc (see Plate IX, 2); these spikes, like the funnels, radiate from the
central globe, but are only six in number. The twenty-one-atomed cone at
the head of the spike we have already seen in silver, and we shall again
find it in iridium and platinum; the pillars are new in detail though not
in principle, the contained globes yielding a series of a triplet, quintet,
sextet, septet, sextet, quintet, triplet.
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