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The volatile oil commonly known as Indian-Grass Oil, is supposed by Professor Royle to be produced from a peculiar species ofAndropogon. This species he considers identical with the Καλαμος αςωματιχος of the ancient Greeks, an he has therefore called itA. calamus aromaticus.For the specimen of the oil which I have examined I am indebted to Dr Christison, by whom it was received from Mr Key, of the Madras Medical Service. This gentleman obtained it while resident in the Nizam's territories, notdoi:10.1017/s0080456800030210 fatcat:rihvdir37vgtvecx2wf2ovghki