Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . emiddle of the cluster arises a scape terminated by a raceme of orange-red orscarlet flowers. The plant is native to the island of Socotra and the southernshores of the Red Sea, and is the source of Socotrine aloes. The latter ischiefly produced on the island of Socotra and consists of the inspissatedjuice of the leaves.—Reproduced by permission of the Philadelphia Com-mercial Museum. exudes is allowed to eva
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . emiddle of the cluster arises a scape terminated by a raceme of orange-red orscarlet flowers. The plant is native to the island of Socotra and the southernshores of the Red Sea, and is the source of Socotrine aloes. The latter ischiefly produced on the island of Socotra and consists of the inspissatedjuice of the leaves.—Reproduced by permission of the Philadelphia Com-mercial Museum. exudes is allowed to evaporate spontaneously, it being usually,however, concentrated by boiling and then poured into boxes(Fig. 34) or gourds, and occasionally it is found in commerce enclosedin monkey-skins (Fig. 35). Socotrine aloes commands the highest 88 SCIENTIFIC AND APPLIED PHARMACOGNOSY price. The latter variety when fresh has an unpleasant odor, but onkeeping develops an odor resembling myrrh and saffron. 1. Socotrine Aloes.—In yellowish-brown to dark-brown opaquemasses, or smooth and glassy, fracture somewhat conchoidal; some-times soft or semi-liquid; odor saffron-like; taste, nauseous and. Aloe vera, the plant yielding Barbadoes aloes. Showing crown of thick,succulent leaves and the long spike (inflorescence) with the flowers on the upperportion of the axis.—After Engler.^ bitter. Powder yellowish-brown or brownish-yellow, giving ayellowish or reddish-brown color with nitric acid. About 50 per centof socotrine aloes is soluble in cold water. It is almost completely ALOES 89 soluble in 60 per cent alcohol or in water at 100° C. On cooling thelatter solution there separates from 40 to 60 per cent of the so-called resin of aloes, which is soluble in alkalies with a red color and isreprecipitated on the addition of acids. About per cent of aloesis soluble in chloroform, and from 4 to per cent in ether, thesolution being of a yellow color. It should contain not more than8 per ce
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
