A solution of the sulphide of potassium ( 3 ss— oz j) is an efficient application in scabies. An extemporaneous sulphide may be made by boiling one part of quicklime and two parts of sublimed sulphur in ten parts of water. With this solution the parts affected by scabies may be painted over, after preliminary cleansing with a warm bath. Sulphur-baths (solution of sulphide of potassium in water, as above mentioned) are very excellent applications in the chronic forms of psoriasis and eczema. The following formula is recommended by Fox in scabies and prurigo: Rx Potassii sulphureti, oz vi; sapon. alb., Њij; ol. olivae, Oij; ol. thymi, 3 ij. M. A milder preparation is the following: Rx Potassii sulphureti, 3 iij; sapon. moll., oz j ; aquae calcis, oz viij; alcohol, oz ij. M. Or the following: Rx Potassii , oz ss; aquae calcis, oz xvj. M. For the relief of pityriasis and parasitic skin-diseases.

The sulphide of sodium (unofficial) being more stable, is better suited for the preparation of sulphurous baths. An artificial sulphurous water, in imitation of the Bargés, is made as follows: Rx Sul-phidi sodii, sodae, sodii chloridi, āā oz ij. M. Sig.: A sufficient quantity for one bath. The Pommade de Baréges of the French is constituted as follows: Rx Sodii sulphureti, sodii carbonat., āā 3 ij; axun-giae, § ijss. M.

Sulphur-baths are frequently employed to favor the elimination of lead, in cases of saturnine disease.

Authorities referred to:

Fox, Dr. Tilbury. Skin Diseases: Their Description, Pathology, etc., second Ameri-can edition.

Lewis, Louis. The Lancet, March 14, 1874, p. 393.

Macpherson, Dr. John. The Baths and Wells of Europe, London, 1873.