In Ophthalmia Neonatorum, the introduction of finely-powdered Calomel into the eye has been employed with marked success by Dupuytren, Kluge, of Berlin, Van Siebold, of Gottingen, and others. It is introduced into the eye by means of a camel's-hair pencil, loaded with the powder, which is shaken from it into the eye, while an assistant separates the lids. It may be employed at the earliest period of the disease, once a day in mild, twice a day in severe cases. From one to two hours after the application, the eyes may be washed with warm water. A cure is generally effected in from four to ten days. Iodine and its salts should be avoided during its use. Dr. Wells speaks of having used with great advantage the insufflation of Calomel in Scrofulous Ophthalmia, in Opacities of the Cornea, and other Eye affections of a scrofulous nature.

139S. In purulent Ophthalmia, Calomel (gr. ij.) and Opium (gr. 1/4), repeated every second hour or thrice a day, till slight ptyalism is induced, is advised by Mackenzie; and it appears to be useful in relieving the nocturnal circum-orbital pain; but, beyond this, it does not seem to exercise much influence. Dr. Watson § considers it quite useless, and if useless, mischievous; and Mr. Lawrence|| states, that his experience corresponds with that of Vetch and Walker, who have seen salivation produced in many instances without the smallest advantage. Local applications, blood-letting, &c, are measures which prove most beneficial. Mr. A. Polandl¶ has published some excellent remarks on the abuse of Mercury in this and other forms of diseases of the eye.

1399. In Amaurosis dependent upon vascular excitement of the Retina, which resists leeches and other antiphlogistic measures, a course of Mercury, so as to establish a mild ptyalism, has been found beneficial. The ptyalism is advised by Lawrence and Mid-dlemore to be kept up for a week or ten days.

1460. In Syphilitic and Idiopathic Iritis, Mercury is regarded by the best authorities almost as a specific. Calomel (gr. j. - ij.),

* See Dr. Bright's Case, Guy's Hospital Reports, part ii. p. 337.

Ophthalmic Hospital Reports, Jan. 1862.

% On Diseases of the Eye, p. 427. § Lectures, vol. i. p. 306. || On Diseases of the Eye, p. 20S. ¶ Lancet, May 15, 1858.

with Opium (gr. 1/4 - 1/2), may be given every four or six hours, until the mouth becomes sore, when the redness of the iris visibly vanishes, the pain is relieved, and the inflammatory action arrested. The iris at the same time should be kept free by the application of Belladonna, the bowels carefully regulated, strict antiphlogistic regimen enforced, and inunction of Ung. Hydrarg. with Pulv. Opii employed every night, to relieve or prevent the nocturnal pain with which the affection is generally accompanied.

1401. In Otitis or Inflammation of the Internal Ear, the same principles which guide the practitioner in other inflammations apply equally to this, with one exception, that the Opium should be omitted. Its employment in these cases is generally attended with a serious aggravation of the symptoms. The Mercury may, however, be advantageously combined with small doses of Tartar Emetic, leeches, salines, antiphlogistics, and the application of blisters to the nape of the neck.

1402. In some forms of Deafness, an alterative dose of Mercury is often most serviceable. (See Argent. Nit.)