Ultramarine Bleu De Garance Outremer De Guimet &c The
unrivalled qualities of native ultramarine prepared from the lapis
lazuli rendered it most desirable to obtain an artificial compound
which, while possessing similar properties, could be produced in
quantity, and at a less costly rate. In demolishing some furnaces
employed in making soda, by means of decomposing sulphate of soda, some
earth had been found impregnated with a light blue, which was proved to
have so close a resemblance to ultramarine as to foster hopes of
success. As a stimulus, there was offered a prize of six thousand francs
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Or L500 For The Production Of Artificial Ultramarine By The Societe
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Ultramarine New Blue Permanent Blue Gmelin's German
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