A further study of that language might lead the scientific inquirer to many an important discovery. The disposition of the Peruvians for observation is well known, and their nomenclature of places is generally expressive more or less either of the nature of the soil, or some peculiarity attached to it: thus a person well versed in Quichua is beforehand aware of what he is to see. Peutocsi, for instance, difficult to be properly pronounced by an European, and corrupted into Potosi, signifies, "_It is said to have burst forth_:" such must have been their tradition, which the very appearance of this singular cone, standing alone and distinct from the system of mountains which surrounds it, and the hot springs in its vicinity, would seem to corroborate. It is in the province of Santiago that the Quichua is first met with. The Jesuits reduced it to a written language, and published a grammar and dictionary of it in Peru. The city of Santiago is a miserable ill-built place, containing not more than 4000 souls. It is situated in lat. 27° 47´, according to Azara, upon the banks of a considerable river which rises in the territory of Tucuman, and running south through this province is finally lost, under the name of the Rio Dulce, in the great lakes called the Porongos, to the west of Santa Fé. The whole population of the province it estimated to be about 50,000; the greater part of which is much scattered in small villages built along the courses of this river and of the Salado, which runs parallel to it, and separates the province on that side from the gran-chaco, or desert, the low lands along their banks being better suited for the pasturage of cattle and for cultivation than the other parts of the province. The soil there is well adapted to the growth of wheat, which is said to yield eighty for one. In most parts of the province the cactus may be seen growing to an unusual size, and the cochineal gathered from it used to form one of the most valuable productions of this part of the country: from 8000 to 10,000 lbs. of it were annually sent to Chile and Peru. Large quantities of wild beeswax and honey were also collected in the woods and sent to the other provinces, in which they were always in demand; but the civil dissensions which have of late years been so frequent in these provinces have checked the industry of the people, who have almost entirely abandoned their old pursuits, and given up their yearly gatherings of these once valued productions. This is the more to be regretted as they are said to be naturally an enterprising and intelligent race, less given to habitual indolence than some of the other inhabitants of these latitudes. The women manufacture ponchos and coarse saddle-cloths, or blankets, which are sold in great numbers to the people of Tucuman and Salta.