d the pain of fatigue. By this temporary insanity, the effect
of the voluntary power upon the whole of his system was increased; as in
the cases of dropsy above mentioned, it would appear, that the increased
action of the voluntary faculty of the sensorium affected the absorbent
system, as well as the secerning one.

8. In respect to relieving inflammatory pains, and removing fever, I have
seen many instances, as mentioned in Sect. XII. 2. 4. One lady, whom I
attended, had twice at some years interval a locked jaw, which relieved a
pain on her sternum with peripneumony. Two other ladies I saw, who towards
the end of violent peripneumony, in which they frequently lost blood, were
at length cured by insanity supervening. In the former the increased
voluntary exertion of the muscles of the jaw, in the latter that of the
organs of sense, removed the disease; that is, the disagreeable sensation,
which had produced the inflammation, now excited the voluntary power, and
these new voluntary exertions employed or expended the superabundant
sensorial power, which had previously been exerted on the arterial system,
and caused inflammation.

Another case, which I think worth relating, was of a young man about
twenty; he had laboured under an irritative fever with debility for three
or four weeks, with very quick and very feeble pulse, and other usual
symptoms of that species of typhus, but at this time complained much and
frequently of pain of his legs and feet. When those who attended him were
nearly in despair of his recovery, I observed with pleasure an insanity of
mind supervene: which was totally different from delirium, as he knew his
friends, calling them by their names, and the room in which he lay, but
became violently suspicious of his attendants, and calumniated with
vehement oaths his tender mother, who sat weeping by his bed. On this his
pulse became slower and firmer, but the quickness did not for some time
intirely cease, and he gradually recovered. In this case the introduction
of an increased quantity of the power of volition gave vigour to those
movements of the system, which are generally only actuated by the power of
irritation, and of association.

Another case I recollect of a young man, about twenty-five, who had the
scarlet-fever, with very quick pulse, and an universal eruption on his
skin, and was not without reason esteemed to be in great danger of his
life. After a few days an insanity supervened, which