. De re metallica. Metallurgy; Mineral industries. 446 BOOK A—-Ampullae arranged in the vessels. B—An ampulla standing upright between IRON RODS. C—Ampullae placed in the sand which is contained in a box, the SPOUTS OF which REACH FROM THE OPERCULA INTO AMPULLAE PLACED UNDER THEM. D—Ampullae likewise placed in sand which is contained in a box, of which the SPOUT FROM THE OPERCULA EXTENDS CROSSWISE INTO AMPULLAE PLACED UNDER THEM. E—Other ampullae receiving the distilled aqua and likewise arranged in sand CONTAINED IN THE LOWER BOXES. F—IrON TRIPOD, IN WHICH THE AMPULLA IS USUALLY placed WH
. De re metallica. Metallurgy; Mineral industries. 446 BOOK A—-Ampullae arranged in the vessels. B—An ampulla standing upright between IRON RODS. C—Ampullae placed in the sand which is contained in a box, the SPOUTS OF which REACH FROM THE OPERCULA INTO AMPULLAE PLACED UNDER THEM. D—Ampullae likewise placed in sand which is contained in a box, of which the SPOUT FROM THE OPERCULA EXTENDS CROSSWISE INTO AMPULLAE PLACED UNDER THEM. E—Other ampullae receiving the distilled aqua and likewise arranged in sand CONTAINED IN THE LOWER BOXES. F—IrON TRIPOD, IN WHICH THE AMPULLA IS USUALLY placed WHEN THERE ARE NOT MANY PARTICLES OF GOLD TO BE PARTED FROM THE SILVER. G—Vessel. rises into the operculum, tliere is put into the ampulla one lozenge or two ; these are made of soap, cut into small pieces and mixed together with powdered argol, and then heated in a pot over a gentle fire ; or else the contents are stirred with a hazel twig split at the bottom, and in both cases the aqua effervesces, and soon after again settles. When the powerful vapour appears, the aqua gives off a kind of oil, and the operculum becomes red. But, lest the vapours should escape from the ampulla and the operculum in that part where their mouths communicate, they are entirely sealed all round. The aqua is boiled continually over a fiercer fire, and enough charcoal must be put into the furnace so that the live coals touch the vessel. The ampulla is taken out as soon as all the aqua has been distilled, and the silver, which is dried by the heat of the fire, alone remains in it ; the silver is shaken out and put in an earthenware crucible, and heated until it melts. The molten glass is extracted with an iron rod curved at the lower end, and the silver is made. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agricola,
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Keywords: ., bookauthoragricolageorg14941555, bookcentury1900, booksubjectmin
