, 2) has a complete carbon atom distributed over the ends of its four arms, a pair of funnels with their linking atom being seen in each. Then, in each arm, comes the elaborate body shown as 3

c

, with its eighty-eight atoms. A ring of twelve ovoids (3

d

) each holding within itself fourteen atoms, distributed among three contained globes—two quartets and a sextet—is a new device for crowding in material. Lastly comes the central body (4

e

) of five intersecting tetrahedra, with a "cigar" at each of their twenty points—of which only fifteen can be shown in the diagram—and a ring of seven atoms round an eighth, that forms the minute centre of the whole. Into this elaborate body one hundred and twenty-eight atoms are built.

TITANIUM: One carbon atom 216
4 c of 88 atoms 352
12 d of 14 " 168
Central globe 128
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Total 864
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Atomic weight 47.74
Number weight 864/18 48.00

Zirconium

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