The _Lauricocha_ or _False Maranon_, also rises near Caxatambo in this province; but as this river has been already spoken of, it is merely necessary to observe, that the lake in which it rises, is near the city of Guanuco, in 11 degrees south latitude, from which it directs its course southwards towards Xauxa, forming a circle, when, after precipitating itself over the east-side of the Andes, it flows northwards, through Chachapoyas to Jaen de Bracamoros, and thence to the Ucayale or True Maranon. The course of the Lauricocha is about 200 leagues from Lauricocha lake to Jaen, and about 150 from thence to its junction with the Ucayale. The intendancy of Tarma contains many gold and silver workings, particularly the celebrated mines of _Yauricocha_, in the Cerro de Bombon. The chief towns of Tarma are Tarma, Huamalies, Huialas, Caxatambo, Conchucos, Guanuco and Pasco. _Tarma_ is 103 miles east-north-east of Lima, in 11° 35' south latitude, and 75° 17' west longitude, in a temperate climate, and surrounded by a large district, in which the soil is every where fertile, excepting on the higher mountains, where it is very cold. The land is chiefly applied to feeding cattle, but many veins of silver of great importance being found and worked in the district, agriculture is neglected. Of these mines, the _Yauricocha_, two leagues north of _Pasco_, the _Chaupimarca_, _Arenillapata_, _St. Catalina_, _Caya Grande_, _Yanacanche_, _Santa Rosa_, and _Cerro de Colquisirca_, are the most productive; there are however many others, which are either unworked, or produce but feebly. The city of Tarma contains 5600 inhabitants. _Huamalies_ is 150 miles east of Truxillo, and is the chief town of a jurisdiction of the same name, situated in the centre of the Cordilleras, commencing at the distance of 240 miles north-east of Lima, and mostly situated in a cold climate extending 120 miles. The towns are chiefly inhabited by Indians, who apply themselves to weaving, and manufacture a great quantity of serges, baizes, and stuffs, with which they carry on a considerable trade, and there is a silver mine, named _Guallana_, in this district. _Huialas_ is the chief place of a district in the centre of the Andes, beginning fifty leagues from Lima, in the same direction as Conchucos. The low parts produce grain and fruit, and the upper abound in cattle and sheep, which form the great branch of its trade. Some gold is found in the mines of this district. _Caxatambo_ is also the chief town of a district commencing thirty-five leagues north of Lima, and extending twenty leagues partly among the mountains, so that the climate is various, but the whole district is very fertile, producing abundance of grain. The Indians manufacture baize, and work some silver mines, of which those of the towns of Caxatambo and Chanca are the most productive.