In 1920, Dr. Svend Lomholt,1 Copenhagen, described a twenty-four hour method of treatment of scabies. This treatment was first used in Copenhagen, in 1911, by Professor Ehlers, and the ointment was made by Mr. Marcussen, a chemist at the hospital of the city of Copenhagen.
We have been using this treatment at the skin department of the Massachusetts General Hospital.
The directions for the preparation of the ointment are given in the original article. Mr. Godsoe, pharmacist at the Massachusetts General Hospital, has kindly furnished the following rather more detailed directions which he has used in making up our supply:
One kilogram of sublimed sulphur is mixed with 2 kg. of 50 per cent, solution of potassium hydroxid (as free from water as can be obtained). Gentle heat is applied until reaction ceases and the solution becomes clear. When the process is complete, one should be sure that the