Rare Geissler Tube

ca 1890

An exceptionally rare multi-bulb Geissler tube containing four different fluorescent fluids: Rhodanine, Eosine, Flourecine, and Authacein. When activated by high voltage from a static machine or induction coil, the fluids glow with bright colors. Geissler tubes were a popular form of home entertainment in the late 19th century.