. De re metallica. Metallurgy; Mineral industries. A, B, C, D—The mountain. E, F, G, H, I, K—Vena cumulaia. accumulations is usually formed a " vena ; " As to those that are found in underground canales which do not appear to have been derived " from the earth or rock adjoining, these have undoubtedly been carried by the water for a " greater distance from their place of origin ; which may be made clear to -anyone who seeks " their ; On the origin of solidified juices he states {De Ortu, p. 43) : "I will now speak of " solidified jui
. De re metallica. Metallurgy; Mineral industries. A, B, C, D—The mountain. E, F, G, H, I, K—Vena cumulaia. accumulations is usually formed a " vena ; " As to those that are found in underground canales which do not appear to have been derived " from the earth or rock adjoining, these have undoubtedly been carried by the water for a " greater distance from their place of origin ; which may be made clear to -anyone who seeks " their ; On the origin of solidified juices he states {De Ortu, p. 43) : "I will now speak of " solidified juices {sued concreti). I give this name to those minerals which are without " dif&culty resolved into liquids (humore). Some stones and metals, even though they are " themselves composed of juices, have been compressed so solidly by the cold that they can only " be dissolved with difficulty or not at all. . For juices, as I said above, are either " made when dry substances immersed in moisture are cooked by heat, or else they are " made when water flows over ' earth,' or when the surrounding moisture corrodes metallic " material; or else they are forced out of the ground by the power of heat alone. There- " fore, solidified juices originate from liquid juices, which either heat or cold have condensed. " But that which heat has dried, fire reduces to dust, and moisture dissolves. Not only " does warm or cold water dissolve certain solidified juices, but also humid air; and a juice " which the cold has condensed is liquefied by fire and warm water. A salty juice is con- " densed into salt; a bitter one into soda ; an astringent and sharp one into alum or into " vitriol. Skilled workmen in a similar way to nature, evaporate water which contains " juices of this kind until it is condensed; from salty ones they make salt, from " aluminous ones alum, from one which contains vitriol they make vitriol. These wo
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Keywords: ., bookauthoragricolageorg14941555, bookcentury1900, booksubjectmin
