=Other Field Crops.=—Yams are grown as a primary crop on mounds, and three different kinds are common, probably referable to _D. alata_, _D. sativa_, and _D. colocasiæfolia_, the last being what is termed the water yam and the first the winged yam. Guinea corn is the most important food grain grown, but millet is sometimes planted. A red species of sorghum (_S. guineensis_, var. _robustum_) is cultivated on a small scale for use in staining leather, but is not used for food. Rice (_Oryza sativa_) is grown in the vicinity of the large rivers, but is said to suffer damage from elephants and hippopotami. The variety seems to be similar to the red rice grown in the Gambia and Sierra Leone. Very little maize is planted, but some is grown near Salaga. Cassava is only seen in the south near the forest boundary, and groundnuts are not plentiful, owing, perhaps, to the fact that cooking oil is obtainable from shea butter trees, which are common in a wild state. Pigeon peas are often planted round the borders of fields, and are left to yield more than one crop. This pea is identical with one of the common “Dhalls” of India (_Cajanus indicus_); the origin of the introduction is obscure. Small beans are grown as well as _Indigofera spp._ Sweet potatoes, okra, capsicum-peppers, sorrel-hibiscus (_H. Sabdariffa_), and the Fra-Fra potato (_Plectranthus, sp._, “Tumuku” of the Haussas) are also grown. =Fibre.=—Plants belonging to two species of _Hibiscus_ are used for the extraction of fibre for the preparation of cordage, the cleaned fibre being similar to jute. These plants grow, with perfectly straight stems, to eight or ten feet in height, bearing short thin branches with axillary flowers. =Tobacco.=—The tobacco grown is used for smoking or the manufacture of snuff in many parts of the Northern Territories, and is prepared in a special manner. For smoking tobacco the green leaves are pressed into small gourds until a quantity of juice exudes, the mass being rolled in this until it assumes an oval form, in which it is sold in the markets before drying. For snuff it is ground up between heated stones until the requisite fineness has been obtained, and is then mixed with a small quantity of the powdered seeds of _Monodora myristica_. The tobacco fields are usually confined to small patches near houses, and wood ashes as well as sweepings are applied as a top dressing. This appears to be the only crop to which manure or fertiliser is given. The leaves always seem to be stripped off the stems at one operation, whereby old and immature leaves are mixed with mature.