A French chemist has been analysing the famous Alexandrian blue on aome fragment* of a Mosaic from Pompeii, and he finds that the pigment wa* composed of sand and carbonate of chalk subjected to a very high temperature, and mixed with copper. H* ha* exactly reproduced the tint by thi* mixture. Alexandrian blue is the most 11 fixed " color known, however, and wM’manufactured in the time of the Ptolemy*, being intraduoed into Italy euly in thcjChrlstian erti
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Gisborne Standard and Cook County Gazette, Volume II, Issue 297, 11 May 1889, Page 2
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77Untitled Gisborne Standard and Cook County Gazette, Volume II, Issue 297, 11 May 1889, Page 2
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