the state [to aid in fusion], and for munitions of war. Copperas, or sulphate of iron, is abundant in San Javier, San Antonio de la Huerta, and Agua Caliente. In the first of these placers a vein runs from south to north, from pieces of which, dissolved in water, there results a tint which, by evaporation, forms into grains, and produces the same effect as the tint of China. In Cucurpe is amianto, or incombustible crystal, which the ancients so much valued. Marbles of various classes and colors, as well as alabasters and jaspers, are found in Opasura, Hermosillo, Uores, La Campana, and other points; but we do not know as yet the place from which the Aztecs obtained the beautiful reddish marble which they used in the construction of their divinity of Chapultepec, which is preserved in the National Museum, and which, according to all conjectures and probabilities, proceeded from the quarries of marble of that state. There are quarries of the stone of chrispa, and even the magnet in Alamas, Hermosillo, in Sierras of the frontier, and in the causada of Barbitas, ten leagues distant from Hermosillo, near the route of La Cieneguilla. Muriate and carbonate of soda, saltpetre, or nitrate of potassa, are found in the margin of the rivers which empty into the Gulf of Cortéz [of California], and particularly in the mouths of the Colorado.
B.
REPORT ON THE MINERAL RICHES OF CHIHUAHUA.
The statistical notices which have until to-day been received, embrace five cantons or departments of that state, which show that there exist in it sixteen minerals [districts containing mines], of which twelve are in working, and four abandoned in consequence of the incessant incursions of barbarous Indians. Their names are Hidalgo del Parral, Minas Nuevas, San Francisco del Oro, Santa Barbara, Zopago, Chinipas, Guazapores, Batozegache, Guadalupe