Through the kindness of Mr. J. J. Harris Teall, F.G.S., I have been enabled to examine a hand-specimen of the above rock, gathered by himself at a point about half-way between the village of Mosedale and the summit of Carrock Fell. In general appearance it coincides with the white or grey variety of the hypersthenite of Mr. J. C. Ward, and which is described by him generally as “a coarsely crystalline compound of plagioclase felspar and hypersthene, with scattered grains of titaniferous iron oxide, and more or less quartz,” remarking that “the hypersthene may be replaced by a hornblendic mineral or may occur in conjunction with it.”