Gruner, Ludwig; Hittorff, Jacques Ignace [Editor]: Fresco decorations and stuccoes of churches & palaces, in Italy, during the fifteenth & sixteenth centuries with descriptions (London, 1844)

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THE KEY TO THE COLOURS.

L. Proper colours (such as flesh, &c.)
M. Emerald green.
N. Porphyry.
P. Yellow marble—Siena—Giallo antico.
Q. Greenish marble, with reddish and blue
veins—modern.
R. Dark rich brownish marble (Africano).

S. Dark violet marble, with bluish spots—
modern.
T. Dark grayish marble—Breccia d’Egitto—
Cipollino.
U. Green, with dark and white spots.—Verde
antico.
V. Gallstone (very rich yellow for gold).

END OF THE DESCRIPTIONS.