t, shaving the part. Oil destroys
other insects, if they be quite covered with it, as the ticks on dogs, and
would probably therefore destroy these. Its manner of operation is by
stopping up or filling their spiracula, or breathing pores; a few drops of
oil poured on a wasp, so as to cover it, destroys it in a few seconds.

15. _Pediculi._ Lice. There is said to be a disease, in which these animals
are propagated in indestructible numbers, so as to destroy the patient.

M. M. Cleanliness, mercurial ointment, stavis acria in powder, or the
tincture of it in spirit of wine. Spirit of wine alone? Bath of oil?

* * * * *

ORDO I.

_Increased Irritation._

GENUS V.

_With Increased Actions of the Organs of Sense._

SPECIES.

1. _Visus acrior._ Acuter sight. There have been instances of people, who
could see better in the gloom of the evening, than in the stronger light of
the day; like owls, and bats, and many quadrupeds, and flying insects. When
the eye is inflamed, great light becomes eminently painful, owing to the
increased irritative motions of the retina, and the consequent increased
sensation. Thus when the eye is dazzled with sudden light, the pain is not
owing to the motion of the iris; for it is the contraction of the iris,
which relieves the pain from sudden light; but to the too violent
contractions of the moving fibres, which constitute the extremities of the
optic nerve.

2. _Auditus acrior._ The irritative ideas of hearing are so increased in
energy as to excite our attention. This happens in some diseases of the
epileptic kind, and in some fevers. Hence the whispering of the currents of
air in a room, the respiration of the company, and noises before
unperceived, become troublesome; and sounds louder than usual, or
unexpected, produce starting, and convulsions.

M. M. Put oil of almonds into the ears. Stop the meatus auditorius with
cotton wool. Set the feet of the patient's bed on cushions, or suspend it
by cords from the ceiling.

3. _Olfactus acrior._ The irritative ideas of smell from the increased
action of the olfactive nerve excite our attention. Hence common odours are
disagreeable; and are perceived from variety of objects, which were before
thought inodorous. These are commonly believed to be hallucinations of the
sense.

M. M. Snuff starch up the nostrils.

4. _Gustus acrior._ The irritative ideas of taste, as of our own saliva,
and even of the atmos