When the observers had worked out this, they compared it with the number of
ultimate atoms in hydrogen:--

290 / 18 = 16.11 +

The respective number of ultimate atoms contained in a chemical atom of
these two bodies are thus seen to closely correspond with their accepted
weight-numbers.

It may be said in passing that a chemical atom of ozone appears as an
oblate spheroid, with the contained spiral much compressed and widened in
the centre; the spiral consists of three snakes, one positive and two
negative, formed in a single revolving body. On raising the chemical atom
to the next plane, the snake divides into three, each being enclosed in its
own egg.

The chemical atom of nitrogen was the third selected by the students for
examination, as it seemed comparatively quiet in contrast with the
ever-excited oxygen. It proved, however, to be the most complicated of all
in its internal arrangements, and its quiet was therefore a little
deceptive. Most prominent was the balloon-shaped body in the middle, with
six smaller bodies in two horizontal rows and one large egg-shaped one in
the midst, contained in it. Some chemical atoms were seen in which the
internal arrangement of these contained bodies was changed and the two
horizontal rows became vertical; this change seemed to be connected with a
greater activity of the whole body, but the observations on this head are
too incomplete to be reliable. The balloon-shaped body is positive, and is
apparently drawn downwards towards the negative egg-shaped body below it,
containing seven smaller particles. In addition to these large bodies, four