It will be noticed ([Plate XVII], 3, 4, 5,) that each bar has two sections, and that the three lower sections in iron, cobalt and nickel are identical; in the upper sections, iron has a cone of twenty-eight atoms, while cobalt and nickel have each three ovoids, and of these the middle ones alone differ, and that only in their upper globes, this globe being four-atomed in cobalt and six-atomed in nickel.
The long ovoids within each bar revolve round the central axis of the bar, remaining parallel with it, while each spins on its own axis; the iron cone spins round as though impaled on the axis.
Iron
(Plate
, 1, and
, 3):
14 bars of 72 atoms 1008
Atomic weight 55.47
Number weight 1008/18 56.00
Cobalt