Do you know what quinine is? / W.D. & H.O. Wills.

No. 32 in a second series of cards given away in packets of Wills's cigarettes in 1924 with the theme of: 'Do you know...?'. This one shows a blue bottle of tincture of quinine in front of the bark and a sprig of white flowers and leaves from the cinchona tree against a yellow ochre background. The text on the back gives a brief history of its therapeutic qualities and how it is harvested.