r. Raw cabbage, and other acrid
vegetables, as water-cresses, mustard. Horses are said to be subject to
inspissated bile, with yellow eyes, in the winter season, and to get well
as soon as they feed on the spring grass.

The largest bile-stone I have seen was from a lady, who had parted with it
some years before, and who had abstained above ten years from all kinds of
vegetable diet to prevent, as she supposed, a colic of her stomach, which
was probably a pain of the biliary duct; on resuming the use of some
vegetable diet, she recovered a better state of health, and formed no new
bilious concretions.

A strong aerated alcaline water is sold by J. Schweppe, No. 8,
King's-street, Holborn. See Class I. 1. 3. 10.

20. _Pelvis renalis inirritabilitas._ Inirritability of the pelvis of the
kidney. When the nucleus of a stone, whether it be inspissated mucus, or
other matter, is formed in the extremity of any of the tubuli uriniferi,
and being detached from thence falls into the pelvis of the kidney, it is
liable to lodge there from the want of due irritability of the membrane;
and in that situation increases by new appositions of indurated animal
matter, in the same manner as the stone of the bladder. This is the general
cause of haemorrhage from the kidney; and of obtuse pain in it on exercise;
or of acute pain, when the stone advances into the ureter. See Class I. 1.
3. 9.

* * * * *

ORDO II.

_Decreased Irritation._

GENUS V.

_Decreased Action of the Organs of Sense._

SPECIES.

1. _Stultitia inirritabilis._ Folly from inirritability. Dulness of
perception. When the motions of the fibrous extremities of the nerves of
sense are too weak to excite sensation with sufficient quickness and
vigour. The irritative ideas are nevertheless performed, though perhaps in
a feeble manner, as such people do not run against a post, or walk into a
well. There are three other kinds of folly; that from deficient sensation,
from deficient volition, and from deficient association, as will be
mentioned in their places. In delirium, reverie, and sleep, the power of
perception is abolished from other causes.

2. _Visus imminutus._ Diminished vision. In our approach to old age our
vision becomes imperfect, not only from the form of the cornea, which
becomes less convex, and from its decreased transparency mentioned in Class
I. 2. 3. 26.; but also from the decreased irritability of the optic nerve.
Th