between the Egyptian calendar and any of the native American systems of recording dates and computing time. The vague year of 365 days, and the corrected solar year, with the great Sothic Cycle of 1460 years, so intimately interwoven with the religious system and historical chronology of the Egyptians, abundantly prove the correction of the Egyptian calendar by accumulated experience, at a date long anterior to the resort of the Greek astronomer, Thales, to Egypt. At the close of the fifteenth century, the Aztecs had learned to correct their calendar to solar time; but their cycle was one of only fifty-two years. The Peruvians also had their recurrent religious festivals, connected with the adjustment of their sacred calendar to solar time; but the geographical position of Peru, with Quito, its holy city, lying immediately under the equator, greatly simplified the process by which they regulated their religious festivals by the solstices and equinoxes. The facilities which their equatorial position afforded for determining the few indispensable periods in their calendar were, indeed, a doubtful advantage, for they removed all stimulus to progress. The Mexican calendar is the most remarkable evidence of the civilisation attained by that people. Humboldt unhesitatingly connected it with the ancient science of south-eastern Asia. But instead of its exhibiting any such inevitable accumulation of error as that which gave so peculiar a character to the historical chronology of the Egyptians, its computation differed less from true solar time than the unreformed Julian calendar which the Spaniards had inherited from pagan Rome. But though this suffices to show that the civilisation of Mexico was of no great antiquity, it only accords with other evidence of its borrowed character. The Mexicans stood in the same relation to Central America as the Northern Barbarians of the third and fourth century did to Italy; and the intruding Spaniard nipped their germ of borrowed civilisation in the bud. So long as the search for evidences either of a native or intruded civilisation is limited to the northern continent of America, it is equivalent to an attempt to recover the traces of Greek and Roman civilisation in transalpine Europe. The Mexican calendar stone is no more than the counterpart of some stray Greek or Roman tablet beyond the Alps; or rather, perhaps, of some Mæsogothic product of borrowed art.