Note 8 — Law II

Luis Geronimo de Cabrera, fourth Conde de Chinchon, became viceroy of Peru in 1628, holding that office until 1639. During his term there was made known the efficacy of a medicine—previously in use among the Indians—the so-called “Jesuit’s bark,” or “Peruvian bark,” obtained from a tree found only in Peru and adjoining countries, named Chinchona by Linnæus, in honor of the viceroy’s wife (who, having been cured by this medicine, introduced its use into Spain). From this bark is obtained the drug known at quinine.