its walls before he becomes sufficiently disenthralled from the spells of climate and national scenery, in order to do justice to the other American capitals. Mexico, unquestionably, is the queen of Spanish cities on this side of the Atlantic; but, in external taste, in modern elegance, and an agreeable combination of splendor and comfort, it does not compare favorably with the chief towns in the United States. Built in regular, square blocks, on a dead level, it wants the picturesque breaks or abruptness, which are only found on inequalities of surface. Its houses, erected around quadrangles--with a court yard or _patio_ in the centre of each,--are stern and massive edifices; but they have rather the air of castles designed for defence or seclusion, than of habitations whose cheerful portals extend a hearty welcome to every passer. They partake of the age in which they were constructed, and of the traditionary architecture of Southern Europe. Yet,--in the pellucid air of these lofty regions,--with its fancifully _frescoed_ walls basking in the pure sunshine, and relieved against the dark background of surrounding mountains;--its streets filled with a motly and picturesque crowd;--its towers and domes breaking the regular evenness of the flat roofed dwellings,--and its splendid groves in the _alamedas_ and _paseos_,--Mexico is, indeed, a capital worthy a great nation, as well as of the enduring recollection and praise of every traveller who visits it. The plan of the city is as regular as that of a checquer board. Its straight streets divide it from east to west and north to south; whilst, nearly in the centre, the great square or Plaza spreads out for many an acre, surrounded by the chief edifices of the State, the Corporation or the Church. On the northern portion of the plaza is erected--on the alleged site of the great _teocalli_, or pyramid temple of the Aztecs,--the cathedral, with its adjacent _Sagrario_. It is, externally and internally, an imposing building of the seventeenth and eighteenth centuries; for although its architecture is neither regular, classical, nor conformable to the rules of any distinct order, yet its massiveness and elaborate detail, impart to it a certain degree of effective grandeur. We have always found it impossible to receive, or impart an idea of architectural beauty or magnificence by description alone. The best writer can but catalogue dimensions and details, and his account is, therefore, always more of a builder's estimate or bill, than a picture which impresses our minds with a vivid image of the real object. We turn, therefore, gladly from the feeble pen to the graphic pencil, and refer the curious reader to the accurate plates which accompany this volume, for a better idea of the internal and external appearance of this sacred edifice, than we can convey by language alone.