82 F³.
E. V. d’Invilliers, 1889.
the valley, generally very well cleared, but not too arable or highly cultivated. The population of the valley is small and the agricultural development meager.
No. III shales appear on the crest of the elevated anticlinal which splits East Shade mountain lengthwise. This is in the Spieglemeyer valley 13 miles long. Exposures of rock here are rare and cultivation confined to the Spieglemeyer farm near the mountain road crossing from Mifflin to Wagner station.
Several other small patches of thin slate rocks occupy wedge-shaped areas between folds of the Buffalo mountains, entering the district from Centre county. But they are insignificent and generally concealed by loose bowlders of sandstone from the surrounding mountains.
