Clear glass, circle based bottle, with cork stopper and paper label, containing Wallas' Linctus Menthol et Terpene Comp. c Heroin (linctus of menthol and terpene compound, with heroin). This preparation is highly likely to have been used as a cough cold aid due to the cough suppressent properties of heroin, the expectorant properties of the terpene and the mucolytic effects of menthol.