the surrounding country by the labors of Zambrano at San Dimas and Guarisamey. Its population increased in twelve years from eight to twenty thousand; while whole streets and squares were added to its extent by the munificence of that fortunate miner. To the extreme north, Santa Eulalia gave rise to the town of Chihuahua; Batopilas and El Parral became each the centre of a little circle of cultivation; Jesus Maria produced a similar effect; Mapimi, Cuencame, and Inde, a little more to the southward, served to develope the natural fertility of the banks of the river Nazas; while in the low hot regions of Sonora and Sinaloa, on the western coast, almost every place designated on the map as a town, was originally and generally is still a Real, or district for mines."9
Such is the case with a multitude of other mines which have formed the nucleii of population in Mexico. They created a market. The men who were at work in the vein, required the labor of men on the surface, for their support and maintenance. Nor was it food alone, that these laborers demanded. All kinds of artizans were wanted, and consequently, towns