This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
This troublesome affection may be well treated by means of dilute liquor potassae (2 dr. to the ounce of water) constantly applied on lint, between the nail and the soft tissues, so as to thin the nail and render it flexible, when it can be rubbed or pared away (Norton: Lancet, i., 1869).
 
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