but show the two triangles; on a plane surface the interpenetration of the
triangles cannot be clearly indicated.) Further, the six bodies are not all
alike; they each contain three smaller bodies--each of these being an
ultimate physical atom--but in two of them the three atoms are arranged in
a line, while in the remaining four they are arranged in a triangle.

The wall of the limiting spheroid in which the bodies are enclosed being
composed of the matter of the third, or gaseous, kind, drops away when the
gaseous atom is raised to the next level, and the six bodies are set free.
They at once re-arrange themselves in two triangles, each enclosed by a
limiting sphere; the two marked _b_ in the diagram unite with one of those
marked _b'_ to form a body which shows a positive character, the remaining
three forming a second body negative in type. These form the hydrogen
particles of the lowest plane of ether, marked E 4--ether 4--on the
diagram. On raising these further, they undergo another disintegration,
losing their limiting walls; the positive body of E 4, on losing its wall,
becomes two bodies, one consisting of the two particles, marked _b_,
distinguishable by the linear arrangement of the contained ultimate atoms,
enclosed in a wall, and the other being the third body enclosed in E 4 and
now set free. The negative body of E 4 similarly, on losing its wall,
becomes two bodies, one consisting of the two particles marked _b'_, and
the second the remaining body, being set free. These free bodies do not
remain on E 3 but pass immediately to E 2, leaving the positive and
negative bodies, each containing two particles, as the representatives of
hydrogen on E 3. On taking these bodies a step higher their wall
disappears, and the internal bodies are set free, those containing the
atoms arranged lineally being positive, and those with the triangular
arrangement being negative. These two forms represent hydrogen on E 2, but
similar bodies of this state of matter are found entering into other
combinations, as may be seen by referring to _f_ on E 2 of nitrogen (N). On