Page:Quarterly Journal of the Geological Society of London, vol. 25.djvu/441

1869.] ULRICH—"NUGGETTY REEF." 331 tioned, suceessful in striking the former vein above the granite. Figs. 5, 5a, 5b represent these relations of the "horse," reef, and intrusive vein.

The third vein of granite was struck in the Alliance Company's engine-shaft at a depth of about 240 feet. Its thickness amounts

Fig. 5. — Plan of Reef, showing Granite Bar and "Horse."

Fig. 5b. — Cross section of the Reef along line a b of fig. 5 a.

Fig. 5a. — Section along the strike of the Reef on line a b of fig. 5.

to nearly 8 feet; and it dips both west and south at angles of 35° through the reef. The latter is at this point nearly vertical, and shows, as was the case with the former two veins, no dislocation VOL. XXV. PART I. 2