Horses do fairly well in parts of the country only, but a small variety of extremely hardy and strong donkey is plentiful; and these are most useful for transport work, being able it seems to live on the memory of a pannikin of maize, and capable of being packed with any weight.
The cultivation of chillies and pea-nuts is exclusively a native industry, and the export of pea-nuts in 1912 amounted to £62,500.
The collection of palm-oil and copra, too, is in native hands, the nuts being collected from the wild palms which grow in their thousands on the coast belts.
The European planters in recent years commenced cocoa-nut palm cultivation, but the million trees planted have not yet come to maturity.
Gum-copal, the resin of an indigenous tree, used for varnishing, and the wax of wild bees is also collected by the natives in the forests, and the export of beeswax in recent years has averaged about £50,000.
This system of collection by natives means the reduction of economic resources, as in collecting wild rubber the vines are destroyed and so are the swarms of bees in the search for wax.
There are other trees capable of commercial exploitation, such as the baobab (cream of tartar tree), cazou, the nuts of which are largely exported from Jamaica, and wattle, the bark of which produces tannin.
The timber possibilities are great, as large forests of cedar exist and a certain amount has been exported.
The geological formation is similar to British East Africa; and although prospecting for minerals is not encouraged, gold in payable quantities has been discovered and worked, and gold to the value of about £30,000 has been exported annually for some years.
Mica of good quality is found in the Uluguru Mountains on the Tanganyika railway about 124 miles from Dar-es-Salaam, and about 100 tons are exported annually.