Ccalral America*.!1!IThe editor of the Providence Journal has seen a letter from Mr. Catherwood, dated the 27th of November, at the ruins in Uxmal—the Northern part of Yucatan. This place was the last visited and described by Messrs. Stevens and Catherwood.It was there that the latter was taken sick, and obliged to hasten away, after being but a few hours among one of the most interesting of the ruined cities of that countrv. He now writes that i lt;mtheir party had already been several weeks busily occupied in their researches among the ruins of that place, and that so vast and so full of interest were these ancient remains, that a month longer will be necessary before they can complete theirdrawings and investigations; after which they willproceed to Chiien, Itzan, and other places, in which some remarkable antiquities exist, andwhich have not yet been described. “In fact, ([observes Mr. Catherwood, “the whole country is covered with ruins, and our greatest difficulty is, in choosing those of most importance, which will tend to some dc finale end, and where we shall be most rewarded for our labors. Several months, he supposes, will still be necessary to accomplish their purposes, as they do not intend to let any thing of importance escape their attention. Theproprietor of I'xmal, and of an extensive district! of country around, Don Simon Peon, was with t our travellers, and had extended to them every facility they could wish in accomplishing the objects of their visit. Dr. Cabot, a young physician and naturalist, from Boston, was also with them.—-J This gentleman was as actively employed in collecting specimens in natural history, as Mr. Caih-erwood was in his department of the arts. D. C. has already made a tine collection of the birds of the country, and will, no doubt, bring home the most valuable collection of ornithological specimens ever brought from tropical America.—Sat.Chronicle.i