Advice medical, and economical, relative to the purchase and consumption of tea, coffee, and chocolate; wines, and malt liquors: including tests to detect adulteration. Also remarks on water. With directions to purify it for domestic use / by J. Stevenson.

  • Stevenson, J.
Date:
1830
Catalogue details

Licence: Public Domain Mark

Credit: Advice medical, and economical, relative to the purchase and consumption of tea, coffee, and chocolate; wines, and malt liquors: including tests to detect adulteration. Also remarks on water. With directions to purify it for domestic use / by J. Stevenson. Source: Wellcome Collection.

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    a) As regards the botanical character of this genus of plants (Thea), it may be just neces- sary to observe, that it belongs to the class Trigynia. Of this genus, Linnzus enumerates two species—viz. the Bohea tea, having flowers with six petals; and the green, having flowers with nine petals. But Dr. Lettsom, in his bota- nical description of the tea-plant, thinks it most probable that there is only one species, and that the difference between the green and Bo- hea teas, depend on the nature of the soil, culture, age, and the manner of drying the leaves. He adds, that it has even been ob- served, that a green tea-tree, planted in the Bohea country, will produce Bohea, and the contrary; and that, on his examining several hundred flowers, brought both from the Bohea and green tea countries, their botanical cha- racters have always appeared uniform. Tea has already been known in Europe above 200 years; for the Dutch East India Company, who first imported:it, and raised its reputation in Europe, was founded in 1602, upon a contribution, at its first settlement, of 6,459,840 florins. ‘The English East India Company was formed towards the end of the reion of Queen Elizabeth, their charter bear-