No test for free tartaric acid was obtained with any of the samples, which would seem to indicate that none of the Mines were artificial wines, in the make-up of which free tartaric acid is very apt to figure.

Coloring Matters

All of the samples of red wines, about forty, were submitted to a search for aniline coloring matters, which resulted in the demonstration that one sample out of the forty, No. 4996, was colored with an aniline dye-stuff, probably fuchsine.

Baumert found one of his eight samples to be colored artificially with an aniline dye.

No search was made for foreign vegetable coloring matters.