Many of them relate to the custom of human sacrifice which, as most people are probably aware, prevailed largely in America when the Spaniards first landed there; though few, perhaps, know the terrible extent to which it was carried. Prescott tells us that few writers have ventured to estimate the yearly number of victims at less than twenty thousand, while many put it as high as fifty thousand, in Mexico alone! If we consider that the lowest of these estimates represents an average of some four hundred a week, or nearly sixty a day, such figures are appalling! And now we learn, beyond the possibility of a doubt, that the same practices obtained in America in times that must have been ages before the Spanish conquest, and, judging by the frequency of the representations of such things in these old bas-reliefs, as extensively. In these sculptures we can see the very shape of the knives used; the form of the plates or platters on which severed heads of victims were placed, and other such details; and in a certain series we are enabled to note the curious point, that, while the officiating priests always wear full beards, the victims appear to have usually possessed no hirsute adornments, or to have 'shaved clean,' as we term it. It may be added that these ancient white people seem to have been a totally different race from those the Spaniards found on the continent; and that between the two there is believed to have been a gap lasting for many ages, during which the country was overrun by Indian or other barbaric hordes; though how or why this came about is one of those mysteries that will probably never be unravelled. * * * * * In conclusion, I have to acknowledge my indebtedness to the writers whose books of travel I have named for the information I have made use of; as well as to express a hope that the writer of the review in the _Spectator_ will regard with indulgence the liberties I have taken with his admirable article. I am sanguine enough to believe, however, that I shall have the sympathy and good wishes of all these in the endeavour here made to arouse public attention to the real meaning and importance of the 'Venezuelan Question'; and to add to the number of those who feel an interest in the future status and ultimate exploration of the mysterious Roraima. I wish also to express my thanks to Messrs. Leigh Ellis and Fred Hyland, the artists to whom the illustrations were entrusted, for the thought and care they have bestowed upon the work, and the successful manner in which they have carried out my conceptions.