two in the botanical garden, and one, (the mother plant,) in the mountains of Tŏlūcă, where it was accidentally discovered. The same mountains produce a very singular species of Cactus, which has likewise been transplanted to the botanical garden. It looks exactly like an old man's head, as it is covered with long grey hair, which completely conceals the thorns: it is raised in boxes filled with pieces of the scoria, amongst which it was originally found. The garden is full of Humming Birds, which feed upon the flower of the Arbol de las Manitos, and, to the European visitor, add much to the novelty of the scene.
Like most Spanish towns, Mexico abounds in churches and convents, the interior of which is very splendid, particularly that of the Profesa, and the great convent of San Francisco. The College of Mines is likewise a magnificent building, the plan of which does honour to the taste of the architect, (the celebrated Tolsa;) although, from some radical defect in the execution, the whole structure is now falling into ruins. It is supposed that the piles, upon which the foundations were laid, were not driven to the depth specified by the contract, in consequence of which the whole superstructure has given way, while the lower floor has sunk below the level of the street. It is quite melancholy to see magnificent rows of columns, windows, and doors, completely out of the perpendicular, with walls and staircases cracking in every direction. The roof, too, in some places,
