The Count of Chinchon returned to Spain in 1640, and his Countess, bringing with her a quantity of the healing bark, was thus the first person to introduce this invaluable medicine into Europe.[14] Hence it was sometimes called Countess's bark, and Countess's powder. Her physician, Juan de Vega, sold it at Seville for one hundred reals the pound. In memory of this great service Linnæus named the genus which yields it _Chinchona_, and afterwards the lady Ana's name was still further immortalized in the great family of _Chinchonaceæ_, which, together with _Chinchonæ_, includes ipecacuanhas and coffees. By modern writers the first _h_ has usually been dropped, and the word is now almost invariably, but most erroneously, spelt _Cinchona_. After the cure of the Countess of Chinchon, the Jesuits were the great promoters of the introduction of bark into Europe. In 1639, as the last act of his viceroyalty, her husband did good service to the cause of geographical discovery, by causing the expedition under the Portuguese Texeira to proceed from Quito to the mouth of the Amazons, accompanied by the Jesuit Acuña, who wrote a most valuable account of the voyage.[15] From that time the missionaries of Acuña's fraternity continued to penetrate into the forests bordering on the upper waters of the Amazons, and to form settlements; and Humboldt mentions a tradition that these Jesuits accidentally discovered the bitterness of the bark, and tried an infusion of it in tertian ague. In 1670 the Jesuit missionaries sent parcels of the powdered bark to Rome, whence it was distributed to members of the fraternity throughout Europe by the Cardinal de Lugo, and used for the cure of agues with great success. Hence the name of "Jesuits' bark," and "Cardinal's bark;" and it was a ludicrous result of its patronage by the Jesuits that its use should have been for a long time opposed by Protestants and favoured by Roman Catholics. In 1679 Louis XIV. bought the secret of preparing quinquina from Sir Robert Talbor, an English doctor, for two thousand louis-d'ors, a large pension, and a title. From that time Peruvian bark seems to have been recognised as the most efficacious remedy for intermittent fevers. The second Lord Shaftesbury, who died in 1699, mentions in one of his letters--"Dr. Locke's and all our ingenious and able doctors' method of treating fevers with the Peruvian bark:" he declares his belief that it is "the most innocent and effectual of all medicines;" but he also alludes to "the bugbear the world makes of it, especially the tribe of inferior physicians."