A solution of bichromate of potassa intensifies the color ; but an excess of this salt is apt to impart a reddish hue. The best aniline for black is the one which contains a mixture of aniline and ...

5. Hoflman's violet. 6. Imperial dahlia, 7. Aniline green. To these may be, added an orange color, chrysaniline, and colors produced from the oxidization of aniline, but not directly applied ; a ...