The “quid of Coca” is frequently mentioned by Squier,[21] a recent American traveller in Peru, but he gives no details of its cultivation or use. Fitzroy Cole[22] also describes the use of Coca in terms similar to those of Weddell, but he confounds it with _Theobroma Cacao_, which yields Cocoa. He says:—“The incredible fatigue endured by the Peruvian infantry on very spare diet, but with the regular use of Coca, the laborious toil of the Indian miner under similar circumstances throughout a long series of years, certainly afford sufficient ground for attributing to these Coca leaves the quality, not only of a temporary stimulant, but also of a strong nutritive principle.” [Footnote 20: “Journal of a Voyage on the Amazon and Rio Negro,” Hooker’s Journal of Botany, Vol. v., 1853, p. 212.] [Footnote 21: “Peru, Incidents of Travel and Exploration in the Land of the Incas.” London: 1877.] [Footnote 22: “The Peruvians at Home,” by Geo. R. Fitzroy Cole. London: 1884.] CHAPTER VII. THE CULTIVATION OF COCA.[23] [Footnote 23: From the _Therapeutic Gazette_ (Detroit), January, 1886, p. 14, and _Pharm. Journ._, 1886, p. 705.] The most recent account of the cultivation of Coca is given by Henry H. Rusby, M.D., who, for more than two months, was engaged in the study of the Coca plant and its products in the districts of Bolivia which produce the best quality of leaves. He says:— “For the details concerning cultivation here presented I am chiefly indebted to Mr. Oscar Lohse, one of the most intelligent cultivators in this country, and proprietor of the Finca of San Antonio, two leagues from the town of Caroica, Yungas.