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
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Total 1439
----
Atomic weight 79.953
Number weight 1459/18 79.944
IODINE (Plate V, 4).--We find herein that the central globe gains 4 atoms,
the two pairs becoming 2 quartets; the connecting rod exactly reproduces
the rods of chlorine and bromine; the funnel is also that of bromine,
except that five bodies, containing 35 atoms, are added to it. The 1439
atoms of bromine are thus raised to 2887.

IODINE: Upper Part {12 funnels of 90 atoms 1116
{Central globe 18
Lower part same 1134
Connecting rod 19
----