purposes, just as the black cassia is used for unguents. There is no substance known that is subject to greater variations in price: the best qualities sell at fifty denarii per pound, others, again, at five. (20.) To these varieties the dealers have added another, which they call daphnoides,[564] and give it the surname of isocinnamon;[565] the price at which it sells is three hundred denarii per pound. It is adulterated with storax, and, in consequence of the resemblance of the bark, with very small sprigs of laurel. Cassia is also planted in our[566] part of the world, and, indeed, at the extreme verge of the Empire, on the banks of the river Rhenus, where it flourishes when planted in the vicinity of hives of bees. It has not, however, that scorched colour which is produced by the excessive heat of the sun; nor has it, for the same reason, a similar smell to that which comes from the south. CHAP. 44.—CANCAMUM AND TARUM. From the confines of the country which produces cinnamon and cassia, cancamum[567] and tarum[568] are imported; but these substances are brought by way of the Nabatæan Troglodytæ, a colony of the Nabatæi. CHAP. 45. (21.)—SERICHATUM AND GABALIUM. Thither, too, are carried serichatum[569] and gabalium, aromatics which the Arabians rear for their own consumption, and which are only known by name in our part of the world, though they grow in the same country as cinnamon and cassia. Still, however, serichatum does reach us occasionally, and is employed by some persons in the manufacture of unguents. It is purchased at the rate of six denarii per pound. CHAP. 46.—MYROBALANUM.