Both the Spaniards and Portuguese possess works of rare merit, far exceeding in magnitude and minuteness any we can boast of, illustrating the achievements of their early navigators, and the rise and progress of their former colonial possessions. But few of these works have been rendered familiar to the British public, and are very imperfectly known, even to those writers who profess to treat of the same or similar subjects. Of course we except Prescott, the appreciation of whose invaluable volumes on the Conquest of Peru, the Conquest of Mexico, and the History of the Reign of Ferdinand and Isabella, is testified by the exhaustion of six large and expensive editions, and one cheaper edition, in this country, besides the incorporation of the fruits of his extraordinary research in a thousand publications that have since been issued on either side of the Atlantic. Previously, however, to Prescott, and in nearly as large a degree, in respect to the territory described, were we indebted to Southey, for his History of Brazil;[14] to Koster for valuable details of his travels in the northern provinces of the same empire; and to Gardner, for a most elaborate research into its botanical treasures, as also a graphic description of the interior of the empire, which he traversed from north to south.[15] The hygiene of the same region has been thoroughly investigated, and its rationale expounded with consummate ability and simplicity of style, by my learned and accomplished fellow-townsman, Dr. Dundas, than whom no man was more competent for the task; and I rejoice to see that, though the subject is necessarily of a very circumscribed range, comparatively speaking, and one not very likely to command public attention, its treatment was so masterly, that nearly all the professional journals in the kingdom received it as an important contribution to medical literature.[16] Its perusal, however, may be also recommended to the general reader as containing notices of Brazilian life and manners and scenery nowhere else to be met with, and which the peculiar facilities enjoyed by the author enabled him to describe with a life-like minuteness whose truthfulness at once stamps its accuracy both on the stranger at a distance and on the most experienced Brazilian resident or native. In speaking thus, I am merely echoing well-recognized facts; my opinion, which would of course be utterly valueless in a medical sense, being in no degree warped by the personal obligation Dr. Dundas has placed me under from the circumstance of his having kindly consented to enrich this volume with a special chapter on a theme analogous to that which his ‘Sketches’ are devoted to.