Black Varnish.

Scientific American 3, 16.7.1868

- An aniline black varnish, of recent Parisian production, is the following: In a liter of alcohol, twelve grammes of aniline blue, three grammes of fuchsine and eight grammes of naphthaline yellow, are dissolved. The whole is dissolved by agitation in less than twelve hours. One application renders an object ebony black; the varnish can be filtered, and will never deposit afterwards.

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