Indian dhall (_Cajanus indicus_), frequently termed the pigeon pea, has been introduced into many parts of the country, with the object of inducing the native to grow a leguminous crop, which would serve the dual purpose of providing a palatable food as well as being beneficial to the soil, but in only a few localities do the natives appear to make use of the peas for food. It has been recommended to grow the plant upon land which has become somewhat exhausted by the repeated growth of grain crops, and to permit the peas to remain upon such land for two or three seasons, during which time they will yield successive crops. The beneficial action which such a plant exerts by nitrifying the soil, and the manurial value of the leaves, which are shed in thick profusion, are important reasons for its introduction, but the value will not be fully appreciated until it has been adopted generally as a food. =SOYA BEAN.=—The Manchurian or soya bean (_Glycine hispida_ or _soja_), which has the additional merit of yielding about 15 per cent. of a valuable oil, and which is highly appreciated as another kind of dhall in India, is being experimented with in various parts of British West Africa (see _Bulletin of the Imperial Institute_, vol. viii. [1910], p. 40). The recent expansion in the cultivation of leguminous crops is a promising step. =CASSAVA.=—Among the Haussas as well as the Yorubas and Nupes, the cultivation of cassava (_Manihot utilissima_) is extensively carried on. In Haussa cultivation it is an unmanured plant, and is usually grown in separate fields surrounded by mud walls, thorn hedges, or Guinea-corn matting. The ground from which a crop of cassava has been harvested is rarely used for Guinea corn; the succeeding crop being usually cotton, with the application of manure. In the Nupe country, near Bida, cassava is frequently employed as a shade crop for onions; in this case being planted around the onion beds and obtaining the benefit of the high state of cultivation, manuring and irrigation which is applied to that crop. Cassava grown under these conditions is planted twenty days later than the onions, and is pulled up a month later. The pagan tribes of Zaria, and the other provinces where they are in greater numbers, do not seem to plant cassava. The Haussa name given to the plant is “Rogo.”