Circumstances, however, of which all that is worthy of detail will be found in the following pages, brought under the author’s observation a portion of our continent which was strewed with gigantic and monumental ruins of ancient cities, and which, to the several departments of Cosmogony, Archæology, and Ethnography, appeared in his eyes to be of vast importance. Impressed with this conviction, although the author left his country without the remotest intention of making a book upon any subject whatever, or even of seeing the wonderful places he has attempted to describe, yet, with very inadequate scientific qualifications—without instruments, except a knife and compass, and without a companion, save an Indian boy—entirely ignorant of the country and its people—he was enabled to explore many objects of interest and curiosity; and he has resolved to present the substance of his observations and researches, in as succinct a manner as possible, that those who are competent to avail themselves of his labors may digest and present them to the public in such a form as will most contribute to the advancement of true science. It is, therefore, to the facts which it has been the author’s privilege to witness and reveal, and not to the garniture of those facts, that he looks, for the interest which he desires to awaken in the minds of his readers, and upon which he relies for his own justification in having for once trespassed _ultra crepidam_ into the charmed circle of literary enterprise. The almost universal curiosity which has manifested itself in every quarter through which public feeling has utterance, concerning the vast and unexplained ruins of our hemisphere, found in Central America and Yucatan, has not been, in modern times at least, excelled by that upon any subject not involving some immediate and practical interest, not even excepting the discoveries of modern antiquarians in Egypt. It is neither the author’s duty nor purpose to analyze this movement, or to discern its cause; it only concerns him to show that he had good reason for presuming that further developments of, and explorations among these mysterious relics of antiquity, could not fail to awaken some portion of that interest which the public mind, in this country at least, has already manifested.