HISTORY IN BOTANICAL STUDY. 111 assured was as good as the original Jesuits' bark. But that Condamine's attention was concentrated on the latter is clear: it was the material and the information secured by Condamine and Joseph de Jussieu that enabled Linnaeus to establish the genus Cinchona in 1742, and justified him in giving, in 1753, the name Cinchona officinalis to the species which yields the Jesuits', or Cardinal de Lugo's, or the Countess's Bark, called "pale" bark at a later date to distinguish it from "red bark" when the latter came to be exported. But between 1742 and 1753 a new factor was introduced into the situation; in 1752 a medicinal Cinchona was discovered in New Granada, and that northern Viceroyalty began to think about the possibility of competing with the southern; a botanist was engaged to under- take a survey of the northern forests in search of other Cinchonas. Meanwhile the export of "red bark" from Loja began, with results that did not bear out the statement made to Condamine that it was as good as "pale bark." Complaints in Europe as to the quality of the bark shipped from Lima led to the conversion of the exploitation of and traffic in "pale bark" into a Royal monopoly, and the use of the name "Crown bark" for the kind recognised as really reliable. This monopoly did not extend to what was exploited and exported as "red bark." That true "red bark" had not been exploited earlier was not because it was not esteemed, but because the tree which yields it, though it occurs in Loja, was not plentiful in that district. But that, when its exploitation did begin, the habit of adulterating it with, or of replacing it by, alien barks became rampant, we learn from Mutis, the botanist employed to explore the forests of the rival northern Viceroyalty. When Mutis was in Lima in 1761 it must have given him no little satisfaction to find that most of the "red quina-quina" despatched to Europe from Loja was not a Cinchona bark, but consisted of a mixture of the barks of four species of Cascarilla, a genus allied to Cinchona but one whose species do not yield barks with marked anti- malarial properties. The southern Viceroyalty, alarmed at the action of its northern rival, now appointed two botanists to investigate the southern forests, and although Ruiz and Pavon did not find any district with forests of the Cinchona officinalis of Loja, they did find one with forests containing "red quina-quina," and Pavon had