=GUMS.=—Two species of _Acacia_ (_A. arabica_ and _A. Sieberiana_) are found, especially in the uninhabited tracts in the centre of the country, and the last named appears to yield a large flow of gum, which, however, is not collected. Examination of this at the Imperial Institute has shown it to be about equal in quality to inferior Sudan grades; _A. arabica_ does not seem to yield gum with such frequency in this locality as elsewhere. _Burkea africana_ and _Pseudocedrela Kotschyi_ produce a quality of gum comparable with “Talh” from the Sudan. (Cf. _Selected Reports from the Imperial Institute_, Pt. II., Gums and Resins, pp. 153, 165-7.) =WOOD OIL.=—By cutting deeply into the base of a tree known as “Neou” (Dagomba), and “Kawa” (Haussa), a rather copious flow of resinous liquid is induced, which, when solidified, is a resin somewhat similar, but inferior, to copal. The tree from which this is procured is botanically known as _Daniellia thurifera_, Oliv., and the so-called “oil” obtained was at one time shipped from Northern Nigeria under the name of African Balsam of Copaiba. It is used in the Northern Territories for lighting purposes, as well as medicinally. The tree yields a handsomely grained timber. (Cf. _Bull. Imp. Inst._, 1915.) =SHEA BUTTER.=—A tree known botanically as _Butyrospermum Parkii_ bears a fruit, from the kernel of which this valuable vegetable fat is procured. The fat forms the cooking oil of the ultra-forest country, taking the place of palm oil in this respect. The mode of preparation in the Northern Territories is, doubtless, similar to that employed in Northern Nigeria. The prepared butter is one of the products carried by the Haussa traders, who visit Ashanti for the purpose of purchasing kola, and is much appreciated in Kumassi, where it obtains a high price. A small quantity is carried down the Volta river by the canoes which bring salt from Adda to Yeji and Daboya. An analysis made at the Imperial Institute of Shea butter from the Northern Territories showed that the material is in no way inferior to the better-known “Shea butter” of Northern Nigeria. Cf. _Bulletin of the Imperial Institute_, vol. vi. (1908), p. 370.