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 ...

However, local authorities are still trying to trace the cause of this mysterious incident.The search was hampered by several ...

The prize is named after Sir William Henry Perkin (1838-1907), most famous for inventing the first aniline dye, mauveine. He was 18 at the time of the discovery and achieved this in the garden shed of ...