The Blue Colouring Matter Of The Lapis Lazuli A Stone Chiefly Brought

: ON THE PRIMARY, BLUE.

from China, Thibet, and the shores of Lake Baikal. About the antiquity

of the stone, and its colour, much has been written, and many

conflicting statements have been made; but there is little doubt that

our lapis lazuli was the sapphire of the ancients; and that the first

certain mention of ultramarine occurs in a passage of Arethas, who lived

in the eleventh century, and who, in his exposition of a verse in the

book of Revelation, says, the sapphire is that stone of which



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