Manganiferous schists carrying cummingtonite or grunerite are now known from several areas of the Lewisian of Scotland. Cummingtonite in paragneisses was first described from the Gairloch area (1)1 and it has since been met with at two localities in the Lewisian inlier of Glenelg—at Druideag Lodge, Loch Duich (2), in association with eulysites, and in the gorge of Glen Beag, 5½ miles south of this points—here associated with rhodonite and pyroxman-gite (3).