. Plants and their uses; an introduction to botany . Fio. 149, II.—Tea. .1, flower, entire. B. flower, cut vertically. C, floraldiagram. D, fruit. E, seed, entire. F, same, cut vertically. (Baillon.) XOX-ALCOHOLIC BEVERAGES 153 nitrogenous substances by the fact that alkaloids form com-binations with various acids in much the same way thatammonia and other alkalis will do. Among alkaloids are. Fig. 150.—Cofifee {Coffea aralnca. Madder Family, Rubiacete). Plaut, show-ing general form. Flower entire, and cut vertically. Fruiting branch.(Baillon.) A .small tree growing about 6-8 m. tall; leaves e
. Plants and their uses; an introduction to botany . Fio. 149, II.—Tea. .1, flower, entire. B. flower, cut vertically. C, floraldiagram. D, fruit. E, seed, entire. F, same, cut vertically. (Baillon.) XOX-ALCOHOLIC BEVERAGES 153 nitrogenous substances by the fact that alkaloids form com-binations with various acids in much the same way thatammonia and other alkalis will do. Among alkaloids are. Fig. 150.—Cofifee {Coffea aralnca. Madder Family, Rubiacete). Plaut, show-ing general form. Flower entire, and cut vertically. Fruiting branch.(Baillon.) A .small tree growing about 6-8 m. tall; leaves evergreen,glossy; flowers creamy white, delicately fragrant; fruit a crimson home, Abyssinia, Mozambifiuc and Angola. included .some of the most powerful poisons known and someof the most valuable medicines. Caffeine acts as a taken in more than small amounts. Even in minute loi AND BEVERACIE PLANTS quantity it often has upon the nervous system a marked(ITect, which may be injurious or beneficial according tocircumstances. The coffee bean contains about caffeine, thied tea leaves about 1-3%. Theobromine, ofwhich there is about in the cacao seed, is found to bescarcely solul^le in the fluids of the body, and thus exertslittle if any effect. The most active constituent of each of the three beverageplants we arc considering is the aromatic
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
