The natural history of the tea-tree, with observations on the medical qualities of tea, and effects of tea-drinking / By John Coakley Lettsom.
- John Coakley Lettsom
- Date:
- 1772
Licence: Public Domain Mark
Credit: The natural history of the tea-tree, with observations on the medical qualities of tea, and effects of tea-drinking / By John Coakley Lettsom. Source: Wellcome Collection.
58/88 page 40
![[ 4° ] SECT. III. Neverthelefs, as I have often obferved that drinking Tea, particularly the moft highly flavored fine green, proves re¬ markably relaxing to many perfons of tender and delicate conftitutions, I was induced to profecute my enquiries farther. 1. To this end I diftilled half a pound of the beft and moft fragrant green Tea with Ample water, and drew off* an ounce of very odorous and pellucid water, free from oil, and which on trial (Sect. II. Exp. II.), fhewed no figns of aftrin- gency. was evaporated to the conflftence of an extract; it was flightly odorous, but had a very bitter, flyptic, or aftringent tafte. The quantity of the extradl thus procured weighed about five ounces and a half. EXPERIMENT III. a. Into the cavity of the abdomen, and cellular membrane of a frog, about three drachms of the diftilled odorous water (No. i.) w:re inje&ed. In tv. enty minutes, one hind leg of the frog appeared much affcdted, and a general lofs of motion and fenfibility fucceeded (b). The affection of the limb continued for (b) See Smith, Tentamen inaugurate de adtione mufculari. Edinb. p. 46. four N](https://iiif.wellcomecollection.org/image/b3041104x_0058.jp2/full/800%2C/0/default.jpg)
