Le quinquina / Compagnie Liebig.

One of a series of cards (sent in sets of 6 in exchange for coupons from jars of Liebig's 'Véritable extrait de Viande Liebig' or Extractum Carnis Liebig). This one describes the cinchona tree (cinchona calsaya), its cultivation and how it is refined to produce quinine. The colour image on the front shows its flowers and leaves and peasants stripping its bark in either Peru of Bolivia. Liebig cards appeared in various languages. This set also advertises Oxo beef tea.