In the vicinity, too, of India, is Bactriana, in which region we find bdellium,[1] that is so highly esteemed. This tree is of a black colour, and about the size of the olive; it has leaves like those of the robur, and bears a fruit similar to that of the wild fig, and in nature resembling a kind of gum. This fruit is by some persons called brochon, by others malacha, and by others, again, maldacon. When of a black colour, and rolled up in cakes, it bears the name of hadrobolon. This substance ought to be transparent and the colour of wax, odoriferous, unctuous when subjected to friction, and bitter to the taste, though without the slightest acidity. When used for sacred purposes, it is steeped in wine, upon which it emits a still more powerful odour. The tree is a native of both India and Arabia, as well as Media and Babylon; some persons give to the bdellium that is imported by way of Media, the name of peraticum.[2] This last is remarkable for its brittleness, while, at the same time, it is harder and more bitter than the other kinds; that of India, on the other hand, is moister, and gummy. This last sort is adulterated by means of almonds, while the various other kinds are falsified with the bark of scordastum, that being the name of a tree[3] the gum of which strongly resembles bdellium. These aduiterations, however, are to be detected—and let it suffice to mention it here, in relation to all other perfumes as well—by the smell, the colour, the weight, the taste, and the action of fire. The bdellium of Bactriana is shining and dry, and covered with numerous white spots resembling the finger-nails; besides which, it should be of a certain weight, heavier or lighter than which it ought not to be. The price of bdellium, in its pure state, is three denarii per pound.