wait for the space of time required to utter one hundred words. The diseased part turns black on the application of the caustic which is a sign of its having been burnt. The application of some acid mixed with clarified butter or honey relieves the pain. If from the thickness of the burnt part, it does not fall off, the following application should be thoroughly applied to it, namely, equal parts of tamarind pulp, of the refuse of kānjika (fermented rice water i. e. crude vinegar), sesamum seeds and liquorice root rubbed together into a paste. Sesamum seeds and liquorice root rubbed together with clarified butter promotes granulation in ulcers."
Why the Acid Neutralises the Alkali
"If you question, my son! how is it that the application of the pungent acid of kānjika relieves the burning of the fire-like hot alkaline caustic, then hear the following explanation from me. Alkalies possess all the tastes except that of the acid. The acrid taste prevails in it and the saline one to a less degree (cf. ante p. 28). The sharp saline taste when mixed with acid becomes very mild, and gives up its sharp quality. From this modification of the saline taste, the pain of caustics is relieved just as fire is extinguished by water."
