be added so much of some vegetable essential oil, as may render them
grateful to the stomach, and thus promote their absorption, as by infusing
parsley or cellery and turneps in the broth; or by balm, mint, or sage
teas.

The following species of this genus only distinguish the situation of the
part previously inflamed, and which is the remote cause of the sensitive
irritated, or inflammatory fever, which attends it.

2. _Ophthalmia interna._ Inflammation of the eye is attended with the
production of new vessels, which spread over the tunica adjunctiva, and
over the cornea; these new vessels are easily seen, as they lie on a white
ground, and give ocular demonstration of their production in inflammation.
When this inflammation of the cornea suppurates, it is liable to leave
little ulcers, which may be seen beneath the surface in the form of little
excavations; and as these heal, they are liable to be covered with an opake
scar. This scar, in some months or years, is liable to wear away, and
become transparent, without the assistance of any polishing powder, as of
very finely levigated glass, as some have recommended. But when the cornea
is affected through all its thickness, the return of its transparency
becomes hopeless. See Class I. 1. 3. 14.

In violent degrees of ophthalmy the internal parts, as the retina, optic
artery, iris, ciliary process, become inflamed, as well as the external
ones; hence the least light admitted to the eye occasions intolerable pain.
This curious circumstance cannot be owing to the action of light on the
inflamed vessels of the cornea; it therefore shews, that the extremity of
the optic nerve or retina is also rendered more exquisitely sensible to
light, by partaking of the inflammation; and I have been told, that red
colours are in these cases sometimes painfully perceived even in perfect
darkness. This shews that the retina is excited into motion by the stimulus
of light; and that, when it is inflamed, these motions give great pain,
like those of other inflamed parts, as the muscles, or membranes. And
secondly, that the ideas of colours consist in the motions of the retina;
which ideas occasion pain, when the extremity of the moving nerve is
inflamed.

M. M. Venesection. Cathartics. Diluents. Torpentia. Frequently moisten the
eye with cold water by means of a rag. Cool airy room. Darkness. When the
inflammation begins to decline, white vitriol gr. vi. in an ounce of water
is more eff