A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . 422,) where the former is collected. The flue is often 70 yards long, and the greatest de-posit of arsenic takes place at about 15 yards from the oven or furnace. Instead of being 422. at once completely roasted, the whits from the stamps are sometimes first rag (orpartially) burnt, for al)out six or eight hours. The object of this partial burning is to save 746 METALLUKGY. time and expense, nearly three-fourths of it being thrown away after dressing it from the
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . 422,) where the former is collected. The flue is often 70 yards long, and the greatest de-posit of arsenic takes place at about 15 yards from the oven or furnace. Instead of being 422. at once completely roasted, the whits from the stamps are sometimes first rag (orpartially) burnt, for al)out six or eight hours. The object of this partial burning is to save 746 METALLUKGY. time and expense, nearly three-fourths of it being thrown away after dressing it from thefirst burning. Fig. 423. The machine called originally Bruntons Patent Calciner, for calcining tin 423
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
