The old encaustic entire colours and tints of number 1. seemed to have suffered a considerable change in opposition to the new ones, but compared to their old fellows in oil they looked bright.
I washed them both with common water, and a brush, the encaustic tints recovered a little; oil-tints not.
I brought the encaustic to the fire, and most tints recovered their original hue, and were equal to the new ones, pinks, yellow-orpiment, lake, terra di Siena, and verditer excepted; the first was partly gone, what remained was dull; the second was grown whiter; lake grown lighter, but had not suffered in beauty of colour; terra di Siena crude, grown rough and dirty; verditer, a little dull.
No. 3. seemed to have suffered by the smoke; but after washing it with a stout brush, and soap and water, it recovered its original hue, pinks, yellow-orpiment, smalt and verditer excepted; the first was sensibly decayed; the second grown darker, inclining towards red-orpiment; the third grown dull, but mixed with Prussian blue it was as bright as the new; verditer grown dark and dull.
No. 2, 4, 5. were just as the new ones, there was no difference.
Oil colours did not stand the test so well; their general appearance in opposition to old and new encaustic,—was:
No. 1. weak, dull and dim, some entirely gone.
No. 2. freckled, of all sorts of hues, not to be washed off.
No. 3. darker, some dull, others dirty, some entirely gone.
No. 4. considerably yellower, and less bright.