formerly in the region of Sakhalites in Arabia (the tract between Ras Makalla and Ras Agab),[9] described by Arrian, so now on the sea-coast of the Somali country, the frankincense when collected is stored in heaps at various stations. Thence, packed in sheep- and goat-skins, in quantities of 20 to 40 lb., it is carried on camels to Berbera, for shipment either to Aden, Makalla and other Arabian ports, or directly to Bombay.[10] At Bombay, like gum-acacia, it is assorted, and is then packed for re-exportation to Europe, China and elsewhere.[11] Arrian relates that it was an import of Barbarike on the Sinthus (Indus). The idea held by several writers, including Niebuhr, that frankincense was a product of India, would seem to have originated in a confusion of that drug with benzoin and other odoriferous substances, and also in the sale of imported frankincense with the native products of India. The gum resin of _Boswellia thurifera_ was described by Colebrooke (in _Asiatick Researches_, ix. 381), and after him by Dr J. Fleming (Ib. xi. 158), as true frankincense, or olibanum; from this, however, it differs in its softness, and tendency to melt into a mass[12] (Birdwood, _loc. cit._, p. 146). It is sold in the village bazaars of Khandeish in India under the name of _Dup-Salai_, i.e. incense of the "Salai tree"; and according to Mr F. Porter Smith, M.B. (_Contrib. towards the Mat. Med. and Nat. Hist, of China_, p. 162, Shanghai, 1871), is used as incense in China. The last authority also mentions olibanum as a reputed natural product of China. Bernhard von Breydenbach,[13] Ausonius, Florus and others, arguing, it would seem, from its Hebrew and Greek names, concluded that olibanum came from Mount Lebanon; and Chardin (_Voyage en Perse_, &c., 1711) makes the statement that the frankincense tree grows in the mountains of Persia, particularly Caramania.