Quadrille Ruled Form. John C. Moore Corporation, Rochester, N. Y. Binder and holes in leaves, each Patented 1906 South of the point in the extreme south edge of 8:21:4 the porphyry tuffs are cut by a coarse trap or fine gabbro dike trending N. 75 degrees west. North of the point a similar trap dike trends N. 15 degrees west. North of the point, in the midst of the porphyrytuffs ap- ppears some 10 feet of dark red shales or rather muds, strike N.15 degrees east, dip 37 degrees east. These may be the same band as the red mud with pebbles in 8:21:7.