The Materia Medica of the Hindus, compiled from Sanskrit Medical Works c5.s10.t2.3

c5.s10.t2.3

The acrid juice of marking nuts is a powerful vesicant and is often employed by the natives for producing fictitious marks of bruises. These can be distinguished from actual bruises caused by blows with a stick or other weapon, by their deep bluish-black colour and from their presenting small vesicles or minute blisters on their surface.