Glass bottle with a glass stopper that is covered with a piece of leather with string wrapped round. Cream coloured powder inside. Handwritten label reads "Gallic. Acid". Second label has handwritten instructions "3 to 5 graines for a dose" and printed company name "Twinberrow, Dispensing Chemist, 2, Edwards Street, Portman Square." Wikipedia: "Gallic acid is a trihydroxybenzoic acid, a type of phenolic acid, a type of organic acid, also known as 3,4,5-trihydroxybenzoic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. The chemical formula is C6H2(OH)3COOH. Gallic acid is still commonly used in the pharmaceutical industry." Savory & Moore 1878, p.2: “Acid, Gallic. (…) Powerful astringent; used internally for checking haemorrhage; also n checking profuse sweating and diarrhoea in consumption. It is sometimes used as a gargle in inflammatory sore throats; externally in the form of a lotion.”