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Pliny the Elder, The Natural History (ed. John Bostock, M.D., F.R.S., H.T. Riley, Esq., B.A.) 1 1 Browse Search
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Pliny the Elder, The Natural History (ed. John Bostock, M.D., F.R.S., H.T. Riley, Esq., B.A.), BOOK XXXIV. THE NATURAL HISTORY OF METALS., CHAP. 49.—BLACK LEAD. (search)
CHAP. 49.—BLACK LEAD. Black leadThe "lead" of the moderns. is used in the form of pipes and sheets: it is extracted with great labour in Spain, and throughout all the Gallic provinces; but in BritanniaMr. T. Wright, the eminent antiquarian, is of opinion that the extensive Roman lead mines at Shelve, in Shropshire, are here alluded to. See the Illustrated London News, Oct. 4, 1856. it is found in the upper stratum of the earth, in such abundance, that a law has been spontaneously made, prohibiting any one from working more than a certain quantity of it. The various kinds of black lead are known by the following names—the Ovetanian,Probably from Ovetum, the modern Oviedo.—B. the Caprariensian,So called from the island of Capraria. See B. iii. cc. 11, 12, and B. vi. c. 37. and the Oleastrensian.See B. iii c 12. There is no difference whatever in them, when the scoria has been carefully removed by calcination. It is a marvellous fact, that these mines, and these only, when they have <