The commerce of Cuyo is of little importance, consisting chiefly in wines, brandy, and dried fruits, which it sends to Buenos Ayres, Cordova, &c. Its European fruits, grapes, figs, pears and apples, are much sought after, and the wool of the vicuna is sent for exportation to Buenos Ayres; its beautiful fawn colour, gloss and softness, rendering it of great value in Spain. Whatever commercial relation is established between the viceroyalty of Buenos Ayres and the kingdom of Chili, the goods must pass through Cuyo; the passage over the Andes being in this government, which, although exceedingly difficult, will one day render it an important district, especially should the trade of China or the east embrace the southern and western shores of America. The capital of Cujo is the city of _Mendoza_, in 33° 25' south latitude, and 69° 47' west longitude, in a plain at the foot of the Andes, the environs being adorned with plantations, which are watered by means of canals. It contains four convents, a college, formerly established by the Jesuits, and a church. A silver mine having been opened in its vicinity, named _Uspallata_, the number of inhabitants of Mendoza is constantly increasing; at present, they amount to about six thousand, who are employed in these works, or in carrying on a productive trade with Buenos Ayres, in fruits, wool, and wine. The river Mendoza flows by this town, which is fifty leagues from Santiago in Chili, and the district around it contains two silver, one copper, and one lead mines. The next town of note in Cujo, is _San Juan de la Frontera_, forty-five leagues north of Mendoza, in 33° 25' south latitude, and 68° 55' west longitude near the Andes, from which circumstance it is also called _San Juan de la Cordillera_. The neighbourhood of this city, which is washed by the river San Juan, has some gold mines; but its principal trade consists in sending wine, brandy, fruits, and vicuña-wool to Buenos Ayres; the pomegranates of San Juan being greatly esteemed for their size and flavour. Its population is nearly the same as that of the capital, which it resembles in regard to the number of its public edifices. Besides these two cities, Cuyo contains the towns of _San Luis de Loyola_, or _De la Punta_, Jachal, Vallofertil, Mogua, Concorto, Leonsito, Calingarta, and Pismanta. _San Luis de Loyola_ is the great thoroughfare for the commerce between Chili, Cujo, and Buenos Ayres; it is situated sixty-two leagues east of Mendoza, and has a church, convent, and college, of the late order of Jesuits. The inhabitants amounting to about 200. The other towns are of little note or importance, and are at present mere villages. The fifth and last division of the viceroyalty of La Plata, is-- _THE GOVERNMENT OF BUENOS AYRES_,