DIVERSITY OF COLORS.
In a very amusing work of the celebrated Goethe, entitled Winkelmann und sein Jahrhundert, it is stated that about fifteen thousand varieties of color are employed by the workers of mosaic in Rome, and that there are fifty shades of each of these varieties, from the deepest to the palest, thus affording seven hundred and fifty thousand tints, which the artist can distinguish with the greatest facility. It might be imagined that with the command of seven hundred and fifty thousand tints of colors, the most varied and beautiful painting could be perfectly imitated; yet this is not the case, for the mosaic-workers find a lack of tints, even amid this astonishing variety.