Page:Report on the geology of the four counties, Union, Snyder, Mifflin and Juniata (IA reportongeologyo00dinv).pdf/145

Rh mantel of broken sandstone and shale, the ridge being slightly divided here by a narrow valley, but keeping a nearly dead level eastward, where the two prongs come together again.

Hassenplug’s quarry is a large opening on the south flank of the ridge and west of the road to New Berlin, where the dip is about 10° N. W. The quarry was idle during 1888 and shows a somewhat similar rock section to the Mifflinburg opening.

Lewis township forms a long narrow strip extending completely across the country from north to south, making almost a perfect parallelogram a little over 2½ miles wide, east and west, and 14 miles long north and south, with an area of 30 square miles.

West Buffalo and Limestone townships lie to the east of it, and Hartley on the west. Lycoming and Clinton county form its northern border lines, which is 2 miles long on the White Deer mountain crest, where it makes a right angle bend to the south for a mile to the Tea Spring, on the White Deer turnpike and nearly an equal distance along the White Medina sandstone plateau at the head of the north branch of White Deer creek. The crest of Jack’s mountain forms its southern border line, which, by the recently reviewed line between Union and Snyder county, is nearly 3 miles long.

Hartley township, as the map will show, is somewhat irregular in its outlines, and of a roughly right-angle triangular shape. Its eastern border line, in common with Lewis township, is 12 miles in length; its southern line, dividing it from Snyder county, a little over 10 miles long, along the crest of Jack’s mountain, while its north and west lines bordering Centre and Mifflin county, is as follows: Beginning one mile from the Tea Spring on the Lewis county line; S. 44¼° W. 4 miles to the Brush Valley Narrows; thence S. 38¾° W. 7 miles to the Penns Valley turnpike; thence S. 49½° W. 6 miles to a mutual corner of