“_Geology._—The base rock is a foliated gneiss and schist; the great granite _massif_ forming the Jarawa Hills lies to the west of the property. There is a good deal of granite on the property, with some dolerite. The rocks are compact, and show considerable signs of regional metamorphism. “_Source of the Tin._—The tin has been carried down from the rich placers at the head water of the Kurdum River, and form feeders that come in above the property from the Jarawa and Fuersum country. In one or two places the natives work the river-bed, an indication in itself of high value, as it does not pay them to work any but rich gravel. The alluvial ground is a quartz gravel with sand near the top. There is very little clay, and long boulders are unlikely, and the wash is friable and easy to work. The river-bed gravel where coarse is very rich. “_Concentrates._—These contain usually minerals such as ilmenite, rootile, zircon, and some topaz and garnet. The tin is of good quality, and varies in colour from black to ruby and pale yellow. A little monazite is found, and an occasional colour of gold. There should be no difficulty in shipping concentrates that will assay 71 or 72 per cent. metallic tin. The tinstone is of a good average size for saving in the sluice boxes which can be given a good grade.” FRESH DISCOVERIES ANNOUNCED The Government Report on Northern Nigeria for 1908-9 contained the announcement that tin in paying quantities had been located in the Provinces of Bauchi, Nassarawa, and on the Kobba-Ilorin border, and this information has since been supplemented by the Akerri (Nigeria) Tin Company Ltd., which has taken up a tin area in an entirely fresh district, one day’s journey west of Zungeru, and one and a half day’s journey north-east of Jebba. Meanwhile, in a White Paper on “Nigeria, September 1910,” issued in the following month of October, we get an official reference to the new tin industry: “Mr. Parkinson states that in the Oban Hills, Southern Nigeria, there are tourmaline pegmatites, and Schmeisser has recorded that since the discovery of an apparently rich tin deposit near Banyo, there has been much prospecting for that mineral in the Cameroons. Surface tin is found in Northern Nigeria by the natives, and sold, chiefly to the Niger Company, but mines on a large scale have not as yet been worked. The geological surveyors sent out by the Imperial Institute have detected the presence of alluvial tin in many sand and river gravels. At Uwet, in Old Calabar, Mr. Parkinson reports the occurrence of tinstone during the year 1906, and of the washed samples 80 per cent. was tinstone, and the remainder was garnet, tourmaline, quartz, and columbite.” CONFIDENCE IN THE FIELD ESTABLISHED