In Lepra, Psoriasis, and Porrigo, Tar-water internally has proved successful in the hands of Dr. Romberg, In Eczema, Impetigo, Acne Punctata, and Prurigo Senilis, it has been used successfully by Mr. Wetherfield. Alibert speaks highly of its value in this class of diseases; and M. Emery's §§ report on it is highly favourable. M. Emery employed it externally in the form of ointment (one-third to one-fourth of Tar), in above 1500 cases, and in five-sixths it effected

* Obs. on Pulmonary Consumption, 1823, p. 243, et seq.

Illustrations of Pulmonary Consumption, &.c, p. 348.

Med. Phys. Journ., Oct. 1822.

§ On the Inhalation of Iodine, &c., 2nd Ed., p. 5.

|| Practice of Medicine, 1844.

¶ Siris. See Berkeley's Works by Rev. G. N. Wright, vol. ii. p. 308, et seq.

** Ranking's Abstract, xxiii. p. 23.

Med. Times, vol. xvi. p. 497.

Lancet, June 17, 1846.

§§ Brit, and For. Med.-Chir. Rev., 1849.

a rapid cure. In Psoriasis, the external use of Tar was combined with the internal use of Arsenic, and of these 200 were cured in two months. In Syphilitic Lepra, it is also favourably spoken of by Dr. R. B. Todd.* Internally, Tar may be given in the form of Tar-water or in gelatinous capsules. Externally, it may be applied in the form of ointment (ut supra). It requires to be steadily persevered in. In Ringworm, the local application of the ointment is often an effectual cure.

2097. In indolent and foul Ulcers, Tar Ointment {ut supra) acts advantageously as a gentle stimulant, induces a healthy action, and hastens the healing process. MM. Corne and De-maux speak highly of the value of a powder made by triturating from one to five parts of Common Coal Tar, with 100 parts of Plaster of Paris, as a deodorizing and disinfecting application to foul and gangrenous Ulcerations. The powder is sprinkled over the sore, or else the powder is made into an ointment with oil.