Rectangular glass bottle with a glass stopper that is covered with a piece of leather with string wrapped round. Label reads "Creoste". Second label reads "2-3 drops for a dose". Probably Creosote; Wikipedia: Creosote is the portion of chemical products obtained by the distillation of a tar that remains heavier than water, notably useful for its anti-septic and preservative properties. It is produced in some quantities from the burning of wood and coal in blast furnaces and fireplaces; commonly found inside chimney flues when the wood or coal burns incompletely, producing soot and tarry smoke, and is the compound responsible for the preservation and the flavor of meat in the process of smoking. The name is derived from the Greek kréas (κρέας), meaning "flesh", and sōtēr (σωτήρ), meaning "preserver". The wood-tar variety has been used for meat preservation, wood treatment, and for medicinal purposes as an expectorant, anti-septic, astringent, anaesthetic and laxative, though these have mostly been replaced by newer medicines. " Savory & Moore 1878, p.38: “Kreosote, or creosote. Similar to carbolic acid, which is now used in preference. It is not very often administered internally, but in diabetes, spitting of blood, and catarrhal affections, it is given (…). It is particularly useful in morning sickness in pregnancy, and in cases of hysteric vomiting. Externally it is ordered in obstinate cutaneous affections, recent wounds, ringworm, etc.; and is a very old remedy for toothache applied on a piece of cotton wool.”