The coal-tar colors : with especial reference to their injurious qualities and the restriction of their use / a sanitary and medico-legal investigation, by Theodore Weyl, with a preface by Professor Sell, tr. with permission of the author by Henry Leffman.

  • Theodor Weyl
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: The coal-tar colors : with especial reference to their injurious qualities and the restriction of their use / a sanitary and medico-legal investigation, by Theodore Weyl, with a preface by Professor Sell, tr. with permission of the author by Henry Leffman. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

    49/194 (page 47)
    Blue.—Indigo, litmus, Archil blue. Brown.—Caramel, liquorice, extract of chestnut wood, ex- tract of catechu. n. SUBSTANCES NOT TO BE EMPLOYED. Mineral Colors. Coftfaining Copper.—Mountain blue. Containifig Lead.—Massicot red lead, orange mineral, Paris yellow, Cassel's yellow. Turner's yellow, white lead, silver white, Naples yellow, chrome yellow, orange chrome. Containing Barium.—Barium chromate, yellow ultramarine. Containing Arsenicum.—Copper arsenite, Scheele's green, Schweinfurth green, mixed green, also mercuric sulphide (vermilion). Organic Colors. Gamboge, aconite, fuchsin, and derivatives, e.g., Lyons blue, eosin. Colors containing nitro-groups, e. g., naphthol yellow, Victoria yellow. Colors prepared from diazo-compounds, e. g., tropseolins and xylidine red. Italy. [An abstract of these regulations is given by Dr. Weyl in the original Italian. They provide that the sale, keeping for sale, or dealing in any article of food or drink which is known to be spoiled, diseased, adulterated, or otherwise injurious to health, and contrary to the regulations, may be punished by fine or im- prisonment, maximum and minimum penalties and terms being enumerated. The manufacture and sale of vessels, etc., intended to contain articles of food and drink, which vessels, etc., contain or are coated with any metal or varnish or other covering, which may be likely to make the food injurious, are forbidden. The Superior Council of Health, with the approval of the Minister of the Interior, is authorized to issue a list of colors con- sidered injurious, and which are not to be used in the preparation of food, drink, toys, household articles, etc. Heavy fines are imposed in case of the use of the substances so prohibited.]