Hygiene and public health / by Louis Parkes and Henry Kenwood.

  • Parkes, Louis Coltman, 1857-1942.
Date:
1901
Catalogue details

Licence: In copyright

Credit: Hygiene and public health / by Louis Parkes and Henry Kenwood. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

    736/774 (page 712)
    Alkali, Chemical, and other Works. Alkali works are those in which muriatic gas (HCl) is evolved. The other works which are subject to the Alkali, etc., Works Regulation Acts, 1881 and 1892, include sulphuric acid, chemical manure, gas liquor, nitric acid, ammonia, chlorine, arsenic, muriatic acid, nitrate and chloride of iron, tar, and zinc works; also the following, unless no H^S is evolved, namely, alkali waste, barium, strontium, antimony sulphide, and bisulphide of carbon works. All these works must be registered by the Local Government Board. In alkali works 95 per cent, of the HCl gas evolved must be condensed, and not more than i grain of HCl gas per cubic foot of air, smoke, or chimney gases must escape from the works. Sulphurous acid and nitric gases must not be present in escaping air or smoke to a greater amount than the equivalent of 4 grains of SOo per cubic foot, at a temperature of 60° F., and at 30 inches barometric pressure. Acid drainage must not be allowed to mix with alkali waste so as to cause a nuisance, and means must be taken to prevent nuisance from alkali waste. Similar regulations apply to the sulphuric acid and other works enumerated above; and in all cases the best available means must be adopted to prevent the escape of noxious gases and to render them harmless and inoffensive. Adulteration of Food and Drugs. There are three Acts now in force relating to this subject, namely, the Sale of Food and Drugs Act, 1875 ; the Sale of Food and Drugs Act Amendment Act, 1879; and the Sale of Food and Drugs Act, 1899. For the purposes of these Acts, the term food includes every article used for food or drink by man, other than drugs or water, and any article which ordinarily enters into or is used in the com- position or preparation of human food, and also includes flavouring matters and condiments. The term drug includes medicines for internal or external use. These Acts prohibit: (i) The mixing, colouring, staining, or powdering any article of food with any ingredient or material so as to render the article injurious to health, with the intent that the same may be sold in that state; and no article so mixed may be sold ; penalty for contravention, /50 (section 3, 1875 Act). (2) The mixing, colouring, staining, or powdering any drug with any in- gredient or material so as to affect injuriously the quality or potency