force rushes through every spiral and every spirilla, and the changing
shades of colour that flash out from the rapidly revolving and vibrating
atom depend on the several activities of the spirals; sometimes one,
sometimes another, is thrown into more energetic action, and with the
change of activity from one spiral to another the colour changes.

The building of a gaseous atom of hydrogen may be traced downward from E 1,
and, as stated above, the lines given in the diagram are intended to
indicate the play of the forces which bring about the several combinations.
Speaking generally, positive bodies are marked by their contained atoms
setting their points towards each other and the centre of their
combination, and repelling each other outwards; negative bodies are marked
by the heart-shaped depressions being turned inwards, and by a tendency to
move towards each other instead of away. Every combination begins by a
welling up of force at a centre, which is to form the centre of the
combination; in the first positive hydrogen combination, E 2, an atom
revolving at right angles to the plane of the paper and also revolving on
its own axis, forms the centre, and force, rushing out at its lower point,
rushes in at the depressions of two other atoms, which then set themselves
with their points to the centre; the lines are shown in +b, right-hand
figure. (The left-hand figure indicates the revolution of the atoms each by
itself.) As this atomic triad whirls round, it clears itself a space,
pressing back the undifferentiated matter of the plane, and making to
itself a whirling wall of this matter, thus taking the first step towards
building up the chemical hydrogen atom. A negative atomic triad is
similarly formed, the three atoms being symmetrically arranged round the
centre of out-welling force. These atomic triads then combine, two of the
linear arrangement being attracted to each other, and two of the
triangular, force again welling up and forming a centre and acting on the
triads as on a single atom, and a limiting wall being again formed as the
combination revolves round its centre. The next stage is produced by each
of these combinations on E 3 attracting to itself a third atomic triad of
the triangular type from E 2, by the setting up of a new centre of
up-welling force, following the lines traced in the combinations of E 4.
Two of these uniting, and their triangles interpenetrating, the chemical
atom is formed, and we fi