from bed. Wine and opium, and sometimes venesection in
small quantity by cupping, if the strength of the arterial system will
allow it.

2. _Delirium maniacale._ Maniacal delirium. There is another kind of
delirium, described in Sect. XXXIII. 1. 4. which has the increase of
pleasureable or painful sensation for its cause, without any diminution of
the other sensorial powers; but as this excites the patient to the exertion
of voluntary actions, for the purpose of obtaining the object of his
pleasureable ideas, or avoiding the object of his painful ones, such as
perpetual prayer, when it is of the religious kind, it belongs to the
insanities described in Class III. 1. 2. 1, and is more properly termed
hallucinatio maniacalis.

3. _Dilirium ebrietatis._ The drunken delirium is in nothing different from
the delirium attending fevers except in its cause, as from alcohol, or
other poisons. When it is attended with an apoplectic stupor, the pulse is
generally low; and venesection I believe sometimes destroys those, who
would otherwise have recovered in a few hours.

M. M. Diluting liquids. An emetic.

4. _Somnium._ Dreams constitute the most complete kind of delirium. As in
these no external irritations are attended to, and the power of volition is
entirely suspended; so that the sensations of pleasure and pain, with their
associations, alone excite the endless trains of our sleeping ideas; as
explained in Sect. XVIII. on Sleep.

5. _Hallucinatio visus._ Deception of sight. These visual hallucinations
are perpetual in our dreams; and sometimes precede general delirium in
fevers; and sometimes belong to reverie, and to insanity. See Class III. 1.
2. 1. and 2. and must be treated accordingly.

Other kinds of visual hallucinations occur by moon-light; when objects are
not seen so distinctly as to produce the usual ideas associated with them,
but appear to us exactly as they are seen. Thus the trunk of a tree appears
a flat surface, instead of a cylinder as by day, and we are deceived and
alarmed by seeing things as they really are seen. See Berkley on Vision.

6. _Hallucinatio auditus._ Auricular deception frequently occurs in dreams,
and sometimes precedes general delirium in fevers; and sometimes belongs to
vertigo, and to reverie, and to insanity. See Sect. XX. 7. and Class III.
1. 2. 1. and 2.

7. _Rubor a calore._ The blush from heat is occasioned by the increased
action of the cutaneous vessels in consequence of th