The woods known to commerce are the ‘Líwá,’ a white-veined, faintly- perfumed, bastard sandal from Madagascar: it is used for the sacred fire by the poorer Parsees. Granadille wood is exported from the Mainland to Europe, where it is worked for the bearings of mills and for the mouth- pieces and flanges of instruments. The Arabs call it ‘Abnús,’ and the Sawahili ‘Mpingo,’ both signifying ebony, which it resembles in appearance, though not in qualities. Less brittle than ebony, and harder than lignum vitæ, it spoils the saw; and being very heavy, it refuses to absorb grease or water. It makes good ram-rods, and the Usumbara people have cut it into pipe-bowls long before our briar-root was dreamed of. The sweet-smelling ‘Kalambak’ (Vulg. Columbo), once common upon the Island, is now brought from Madagascar. There are two kinds,—one poor and yellow, like our box, the other hard, heavy, and dark red. Its fine grain takes the high polish of mahogany, and it would make good desks and work-boxes. Comoro men and Indian carpenters turn out rude furniture of this wood, which is wilfully wasted: in felling and shaping it the plantation-slaves, who ignore the saw, chip away at least half. The smoke is said, to keep off mosquitos. The mango, the jack, the copal tree, and many others, give fine hard woods for cabinet work. Planks and scantling, cross-beams and door-panels, are made of two fine trees, the ‘Mtimbati’ and the ‘Mvúle.’[62] The negro carpenters always sacrifice, I have said, a tree to make a plank, and the latter is so heavy that for all light erections, such as upper rooms, boards must be imported from Europe. The Mtimbati is the more venous; rungs of ladders, well kept and painted, will last 15 years. The enduring Mvúle, a close- grained yellow wood, is rare upon the Island, but common in the Coast jungles. As is the case with the Kalambak, there is no tariff for these trees: what to-day is sold at a bazar auction for $1 may in a week fetch $8. A good practical account of the medicinal plants and timbers of Madagascar and Mozambique, Zanzibar and the Seychelles, will be found in appendices A. B. vol. ii. of Mr Lyons McLeod’s ‘Travels in Eastern Africa, with a Narrative of a Residence in Mozambique.’ Captain Guillain may also be consulted, vol. i. p. 23-25. The Bordi or Zanzibar rafters are felled by slaves on the Mainland, and are brought over by Arabs and other vessels. The material is the useful mangrove, of which we here find the normal two species; the Arabs call both ‘Gurum,’ and prefer the Makanda, or red kind. At Zanzibar the posts which become worm-eaten, and are reduced to powder by white ants, must be changed every five years. In arid Maskat they will last out the century, and they find their way to Aden, to Jeddah, and even to Meccah. The usual price in the Island is $2 to $3 per ‘Korjah,’ or score.