usion of the bile from the gall-bladder, and
its derivation into the duodenum, is an irritative action in consequence of
the stimulus of the aliment on the extremity of the biliary duct, which
terminates in the intestine. The increased secretion of tears is occasioned
in a similar manner by any stimulating material in the eyes; which affects
the excretory ducts of the lacrymal glands. A pain of the external membrane
of the eye sometimes attends any unusual stimulus of it, then the sensorial
power of sensation becomes added to that of irritation, and a superficial
inflammation is induced.

5. _Dentitio._ Toothing. The pain of toothing often begins much earlier
than is suspected; and is liable to produce convulsions; which are
sometimes relieved, when the gum swells, and becomes inflamed; at other
times a diarrhoea supervenes, which is generally esteemed a favourable
circumstance, and seems to prevent the convulsions by supplying another
means of relieving the pain of dentition by irritative exertion; and a
consequent temporary exhaustion of sensorial power. See Class I. 1. 2. 5.
Sect. XXXV. 2. 1.

The convulsions from toothing generally commence long before the appearance
of the teeth; but as the two middle incisors of the lower jaw generally
appear first, and then those of the upper, it is adviseable to lance the
gums over these longitudinally in respect to the jaw-bones, and quite down
to the periosteum, and through it.

As the convulsions attending the commencement of toothing are not only
dangerous to life in their greatest degree, but are liable to induce stupor
or insensibility by their continuance even in a less degree, the most
efficacious means should be used to cure them.

M. M. Lance the gum of the expected teeth quite through the periosteum
longitudinally. Venesection by the lancet or by two or three leeches. One
grain of calomel as a purge. Tincture of jalap, five or six drops in water
every three hours til it purges, to be repeated daily. After evacuations a
small blister on the back or behind the ears. And lastly, two or three
drops of laudanum according to the age of the child. Warm bath. See Class
III. 1. 1. 5. and 6.

6. _Priapismus chronicus._ I have seen two cases, where an erection of the
penis, as hard as horn, continued two or three weeks without any venereal
desires, but not without some pain; the easiest attitude of the patients
was lying upon their backs with their knees up. At length the co