seen beyond Cline’s, the No. IX rocks extending from there south to the creek and Penns township line.
On Tuscarora creek the Catskill red shales show a dip of 85° S. E. just beyond the forks of the road, the axis of the basin here lying further south in Middle Creek township. The approximate junction of Nos. IX and VIII is passed over just before reaching D, Breon’s house, where the transition measures dip 40° S. E. Further north there is a good exposure of these rocks on the same dip, largely tinged with thin red beds, but producing a gray soil.
In other portions of this township there are additional exposures of the individual members of No. VIII as well as the Catskill rocks; but they are all extremely limited and none of them furnish either good or continuous sections of these formations. On Penns creek, a short distance below the northern township line, the Hamilton rocks are fairly massive and are slightly quarried upon dips of from 50° to 65° S. E., some of them being flaggy in structure and furnishing a good stone for building purposes. The same series are exposed in a small branch stream ½ a mile further west upon similar dips and presenting similar characteristics.
13. Centre Township in Snyder county.
This township lies next west of Jackson, along the Union county line. It has the Jack's mountain crest for its northern border line, 4 miles long to Penns creek and extends nearly 2 miles further along that stream to the northwestern corner of Jackson. Its eastern line is about 2 miles long bordering on Jackson and Middle Creek townships. Its southern line is 6 miles in length, running east and west, a little south of the Northumberland synclinal basin, and generally keeping along the high land between the waters of Penns creek and Middle creek. Its western line, 3 miles in length, makes a right angle with the last and extends north to the crest of Jack’s mountain, giving a total area of about 18 square miles.
Centerville, located close to Penns creek in the north-
