Trade card for Thermaline, location unknown, undated
Description:
The card verso reads "A carefully prepared combination of the active principals of Calisaya Bark and a species of the Fever Tree of Australia." Thermaline treats chills, fever, dyspepsia and malarial diseases. The product is prepared in the form of capsulets for swallowing. Each capsulet is equal to one and a half grains of quinine.