An occurrence, which seemed to Mr. McInnes to be of particular interest, was his discovery on upper Winisk river of a large area of so-called norite rock. That is the rock in which the nickel of Sudbury occurs. It is quite a characteristic rock. Mr. McInnes examined samples under the microscope, and they are not to be distinguished from the Sudbury rock. That led him to hope that there was a possibility of nickel occurring there too, but he did not find any, although he examined as well as he could. But he had not much time, and was too far away. There are two or three areas of these Keewatin rocks occurring unfolded in the Laurentian, but Mr. McInnes found no minerals in economic quantities in them at all. Near Eabamet river, a tributary of the Albany, he saw crystals of mica in the granite, two and a half inches in diameter. Of course that is not large enough to amount to much, but it shows a possibility that there might be something better there. Mr. A. W. G. Wilson says of the district north of Lac Seul explored by him (See p. 74):—“There seems to be little prospect of finding valuable economic minerals in the region in paying quantities. In almost all the bands of basic schists small, less often large, veins of quartz occur. At the surface these veins and the associated schists present the usual rusty appearance due to the decomposition of the pyrite. The granites are occasionally cut by pegmatitic dikes. Near the head of Cross lake, a rock, apparently of this character, carries a small amount of molybdenite in crystals varying in size up to an inch and a half across; it is uncertain whether the mineral is of economic importance, but the small size and the poor character of the specimen seen, and the difficulties of transportation point to the deposit being economically unworkable. The extent of the vein is not known. Near the inlet into Slate lake, about three-quarters of a mile from its northeast end, on the eastern shore, is the only place where magnetic minerals were found sufficiently segregated to produce a noticeable local variation of the compass. Here, stringers of a metallic mineral, probably magnetite, were found. Though this metal is sometimes a constituent of the basic rocks, the more common occurrence of iron ore is in the form of ilmenite. No hematite was noted in the district.” In his report (See p. 60) Mr. J. R. Dickson speaks of the mineral deposits of the area explored by his party south of Cross lake as follows:—“Judging by such necessarily superficial observations as the members of the party were able to make, the region we covered is not well supplied with economic minerals. TRACES OF COPPER