473
Number weight 639/18 35.50
(The Atomic Weights are mostly from Erdmann, and the Number Weights are
those ascertained by us by counting the atoms as described on p. 349,
January, and dividing by 18. Prof. T.W. Richards, in _Nature_, July 18,
1907, gives 35.473.)
BROMINE (Plate V, 3).--In bromine, each funnel has three additional bodies,
ovoid in shape, an addition of 33 atoms being thus made without any
disturbance of form; two pairs of atoms are added to the central globe, and
a rearrangement of the atoms is effected by drawing together and lessening
the swing of the pair of triplets, thus making symmetrical room for the
newcomers. The connecting rod remains unchanged. The total number of atoms
is thus raised from the 639 of chlorine to 1439. Over and over again, in
these investigations, were we reminded of Tyndall's fascinating description
of crystal building, and his fancy of the tiny, ingenious builders busied
therein. Truly are there such builders, and the ingenuity and effectiveness
of their devices are delightful to see.[20]
BROMINE: Upper part {12 funnels of 58 atoms 696
{Central globe 14
Lower part same 710
Connecting rod 19
----
Total 1439
----
Atomic weight 79.
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