. The elements of materia medica and therapeutics (Volume 2) . ormc. (Royle, lllust. of the the Him. Mountains, p. 318.) 7. Rheum Moorcroftianum. (Royle, Must, ofthe Rot. of the Him. Mountains, p. 318.) These three are Himalayan species, R. Emodiand Webbianuin furnish Himalayan rhubarb,whose properties are very different to those ofofficinal rhubarb. 8. R. RhapoUticum, Linn.—Grows in Thrace;borders of ihe Euxine Sea ; north of the Caspian ;Siberia, &c. Cultivated in this country for theleaf-stalks, which are used for tarts and pud-dings. Cultivated also in France, and yields partof the
. The elements of materia medica and therapeutics (Volume 2) . ormc. (Royle, lllust. of the the Him. Mountains, p. 318.) 7. Rheum Moorcroftianum. (Royle, Must, ofthe Rot. of the Him. Mountains, p. 318.) These three are Himalayan species, R. Emodiand Webbianuin furnish Himalayan rhubarb,whose properties are very different to those ofofficinal rhubarb. 8. R. RhapoUticum, Linn.—Grows in Thrace;borders of ihe Euxine Sea ; north of the Caspian ;Siberia, &c. Cultivated in this country for theleaf-stalks, which are used for tarts and pud-dings. Cultivated also in France, and yields partof the French rhubarb. 9. R. Crassincnium, Fischer.—Habitation un-known. Its roots possess, according to Mr. An-derson, of the ApothecariesGarden, Chelsea, the colour and odour of Turkeyrhubarb. (Lindley, Fl. Med.) 10. R. leucorrhizum, Pallas; R. nanum, Sievers.—Said to yield Wlxite or Im-perial rhubarb. Preparation.—The method of curing or preparing Asiatic rhubarb for themarket varies somewhat in different localities. In China it is as follows :—The. Rheum Emodi. 274 ELEMENTS OF MATERIA MEDICA. roots are dug up, cleansed, cut in pieces, and dried on stone tables heated beneathby a fire. During the process the roots are frequently turned. They are after-wards pierced, strung upon cords, and further dried in the sun. (Du Halde,.Descrip. Geograph. et Hist, dela Chine, t. iii. p. 492.) In Tartary the Mongulscut the roots in small pieces, in order that they may dry the more readily, andmake a hole in the middle of every piece, through which a cord is drawn, in orderto suspend them in any convenient place. They hang them, for the most part,about their tents, and sometimes on the horns of their sheep. (Bell, Travels/mmSt. Petersburgh to divers parts of Asia, vol. i. p. 311.) Sievers, however, statesthat the roots are cut in pieces, strung upon threads, and dried under sheds, so asto exclude the solar rays; and the same author tells us, that sometimes a yearelapses from the time o
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