ction, but it can,
apparently, not manifest its presence without motor nerve cells in
healthy action. Every thought, though not synonymous, is evidently
synchronous with a current of motor nerve force, and it is not
improbable that, by means of these currents, that silent transference of
thought is effected from brain to brain, which modern psychology has
demonstrated to be not only possible but actual under certain
conditions. But further speculation on these interesting mysteries it
would be out of place here to indulge in.

F. Action on Sensory Centres and the Reflexes.

The sensory sphere remains comparatively unaffected in mild cases, and
in the early stages of more serious ones, but when paresis has deepened
into paralysis, sensation becomes ever more blunted, and with the advent
of coma, of course, quite extinct. Reflexes, both superficial and deep
ones, are also completely abolished at this period of the poisoning
process, and the nerves of special sense do not react against any, even
the strongest possible stimulation. The eye stares vacantly into a
glaring light held close before it, and the widely dilated pupil shows
no sign of reaction. The ear also appears deaf to any noise, and strong
ammonia vapour is inhaled through the nose like the purest air, whilst
pricking, beating, and even burning the skin elicit not a quiver of a
muscle.

Feoktistow's experiments with regard to reflexes, more especially their
restoration by strychnine, differ in their results entirely from
Australian observations. Whilst we have no difficulty in restoring them
with the drug on man as well as the domestic animals, his experiments on
frogs were a failure, and merely showed a decided antagonism between the
two poisons. He did not succeed in restoring the reflexes, and, instead
of following up with experiments on the higher animals, he trusted
implicitly to his results on frogs, and thus lost his opportunity.

G. Irregularities in the Action of Snake-poison.

There is in the whole range of toxicology not a single condition known
to us in which the symptoms, both in chronological order and in their
strength and relation to each other, show as much variety as those of
snake-poison. Experienced observers will agree with the writer that it
is but rarely we find two cases of snakebite exactly alike in the
symptoms they present. Some of these puzzling variations have already
been alluded to, but it is necessary to consider them a