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"Tea and coffee are the same thing," says Liebig; at least, he says that Theine, the base of tea, and Caffeine, the base of coffee, are the same. What I know is, that, when coffee costs fifty dollars a year, tea costs thirty dollars and eighty-nine cents. For tea and coffee, Hero, allow about another tenth, the cocoa and cream will bring it up to that.
The leaves are much more delicate in texture than those of Chinese plants, which hardly reach 4 inches in length, and the former contain a larger percentage of the invaluable alkaloid, Theine. Dr. Chas.
As strengtheners and comforters of the average human system, however, they have no superiors, and none others are so largely used. It is a little singular that the active principles of coffee and tea are probably identical, no more so, however, than the marvellous similarity of starch, gum, and sugar, or other chemical wonders. They have been called cafeine and theine, respectively.
Extracts, as of vanilla, lemon, bitter almond, &c., should be used with the greatest care, and if possible always be added to an article after it cools, as the heat wastes the strength. Tea and coffee are the most universal drinks, after water. The flavor of both is due to a principle, theine in tea, caffeine in coffee, in which both the good and the ill effects of these drinks are bound up.
The same may be said of chocolate." Playfair and Lankester: Tea contains 3 per cent. theine. Coffee " 1¾ " caffeine. Cocoa " 2 " theobromine. Probably the proportion of caffeine in coffee would be more correctly stated as 1¼ per cent. Dr. Johnson's analysis: Dried milk 35 \ Cocoa essence 34¾ \ Flesh formers in Cocoa-nibs 23 / each hundred parts. Best French chocolates 11 / Mr.
"In the first series of experiments, the daily allowance of food, though less copious on the tea days, was more nitrogenized, and nitrogen also was taken in as theine. Yet, in spite of this, the quantity thrown off in twenty-four hours was nearly a gramme less than on the water days.
It vaporizes at 185 degrees C. or 365 degrees Fahr., hence it is not driven off by continued boiling of tea infusion. W. Dittmar found by experiment that prolonged steeping of tea leaves up to ten minutes increased the proportion of theine in the infusion. His results are as follows: STEEPED 5 MINUTES. Average of 8 samples Chinese tea: Theine, per cent infusion 2.58 Tannin 3.06
It belongs to the holly family, but contains a bitter principle similar to, if not identical with, theine, or the alkaloid found in tea and coffee." It is taken in a somewhat singular way. The mate, a gourd stained black, holding three or four ounces of water, is nearly filled with the coarsely-powdered yerba.
The active principle of tea is called theine; that of coffee, caffeine, and of cocoa, theobromine. They also contain an aromatic, volatile oil, to which they owe their distinctive flavor. Tea and coffee also contain an astringent called tannin, which gives the peculiar bitter taste to the infusions when steeped too long. In cocoa, the fat known as cocoa butter amounts to fifty per cent. Tea.
When any person is in a critical dilemma, pressed on each side by unsurmountable difficulties, the Highlanders have a proverb, The e' eada anda theine bealtuin i.e., he is between the two Beltane fires. There are in several parts small round hills, which, it is like, owe their present names to such solemn uses.
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