“One of the most pleasing features of this property is its constant supply of water for sluicing and power purposes, and the ample head of water given by the three falls for hydraulicing.” In the Bisichi Valley there is a large alluvial deposit of light sandy material which is quite free from clay, and is extremely friable, and consequently capable of cheap and rapid concentration. Black oxide of tin occurs abundantly in the river beds and adjacent alluvial flats, and is of very good quality, there being practically no iron or other impurity associated with it. The tin-bearing alluvial is all on the surface, and varies in depth from a few inches to some 20 feet in the vicinity of the river. Systematic tests of the alluvial by trial pits were commenced this year, and up to the present the great proportion of the alluvial of the river Bisichi has been tested. The tested ground averages 4 yards in depth, and contains approximately 2,120,000 cubic yards of payable alluvial wash. The latter varies in value from traces to 129 lbs. of black tin per cubic yard, the average value being 7.27 lbs. of black tin per cubic yard. The total contents of the tested portion therefore amounts to 6,800 tons, exclusive of the river bed deposits, which the Niger Company’s engineers estimate to contain about 1,000 tons. The nature of the river-bed wash does not lend itself to accurate sampling, but Mr. Laws, judging by actual returns from similar deposits on this field, considers this estimate of 1,000 tons a moderate one, and states that it may be taken that some 7,800 tons of black tin (containing over 70 per cent. of pure metal) have been developed to date. Taking the costs as estimated by Mr. Laws at £45 per ton, the above tonnage contained in the area already proved, shows an available profit of over £350,000. Payable tin-bearing alluvial exists on other portions of the Bisichi Valley area, but as it has not yet been measured or tested, no exact estimate can be made of quantities and values. The ground already tested represents about one-tenth of the total area; but the very high values and quantities so far disclosed cannot be taken to apply to the whole area, as it is natural that the course of the main stream should carry better values and deeper ground than the remainder of the land where the alluvial would be more patchy and shallower. It will be seen, however, that the estimated working costs per ton have been placed by Mr. Laws at a figure which will permit of lower grade ground being worked than that already referred to. Mr. Laws advises the immediate erection of an hydraulicing plant capable of dealing efficiently with wash dirt sufficient to produce 800 tons of black tin annually, an ample head of water being available for this purpose throughout the year.