Important: Safety Warning
This page directs the use of hazardous substances — such as benzine, gasoline, lye, or strong acids — for household tasks. These materials are highly flammable, corrosive, or poisonous, and the practices described have caused fires, burns, and poisonings.
In addition, this page presents medical treatment from an era before modern medicine. The remedies described are ineffective against the conditions named, and some of the ingredients or doses are harmful. Do not use them to treat any illness; consult a qualified medical professional.
This information has been left in for historical purposes but should not be acted upon.
Home › Patent And Proprietary Medicines › Velpeau's Black Caustic
Velpeau's Black Caustic
Triturate in a porcelain mortar 1 ounce powdered liquorice root, and add sulphuric acid in small 5342. Dutch Drops, or Haerlem quantities until a mass is obtained neither Drops. There is considerable difference in too hard nor too liquid. This preparation the ingredients and quality of these long-celeforms a well-marked hard black scab. brated drops; but the most common prepara- Mix.