Toch, Maximilian, 1864-1946, Toch, Maximilian, 1864-1946. Chemistry and technology of mixed paints · New York : D. Van Nostrand · leaf 126
THE INERT FILLERS AND EXTENDERS 123 lead was mixed with barytes it stood exposure better than pure white lead. Late in the fifties he came across … No. 45. Silica, or Silex- — -Photomicro- method of dry grinding graph X250, very fine grain. by the tumbling process. The quartz was simply crushed to a granulated state and then put into a tumbling barrel with pebbles, which was revolved until the silica was reduced to a compara- tively impalpable…
Paint · Pigments
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