This bottle contained Condy's crystals. Condy's Crystals (potassium permanganate) was a popular domestic item for decades, its crystals usually being dissolved in water to make a purple solution for antiseptic and disinfectant purposes. It was also used for snake bite, with standard first aid texts advising that a snake bite should be cut with a knife or razor, the venom sucked out and Condy's Crystals applied to the site. (ref. Powerhouse Museum) A small rectangular four-sided brown bottle. The neck has a screw thread.On sides - POISON NOT TO BE TAKEN On bottom - F1090 Mmedical health bottle condy's-crystals