Poison romance and poison mysteries / by C.J.S. Thompson.

  • Charles Thompson
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Poison romance and poison mysteries / by C.J.S. Thompson. Source: Wellcome Collection.

    237/272 page 225
    22 5 heads. While hung up in the drying-houses, they undergo a curing process, consisting of exposure to a considerable degree of heat, through which they become moist, after which they are dried for packing. In Persia and Turkey a form of tobacco is sold under the name of Tumbeki for use in the water-pipes or narghileh, which is said to be the product of the Nicotiana Per sic a. The active principle Nicotine was first isolated in 1828, by Posselt and Reimann, and is an almost colourless, oily liquid of a highly poisonous nature. It soon becomes brown on exposure to air or light. The amount present in tobacco leaves varies considerably, but it is usually about six per cent. It has not been met with in tobacco smoke, according to Vohl, but the tobacco oils contain minute proportion of nicotine. One drop of pure nicotine is sufficient to kill a dog, while a very little more will destroy life in a human being. 1S
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