Rapport d'avancement 1874-1889, A-Z .. . 52° et sud 43°. La limite nord de la digue est marquée par une petite rivière qui coule dans le barrage de la MIU d'Althouse. Il s'étend le long de la route pour 400 et est probablement la moitié de cette épaisseur, réussi par le redshale le long de la route pendant un demi-mile, lorsque le flanc nord de la digue du mont Kinsey est rencontré, le premier plongeon étant S.65° E. 75°. Le piège ici est plus clair en couleur, et beaucoup de brenrendering dips douteux; mais il montre une pente générale abrupte-nation au sud-est. Le Trap s'étend sur environ 400 yardsalong Road, légèrement arrimé à l'extrémité sud où le DIP ISS. 25° E. 60°. Un cépage

• Contributeur: The Reading Room / Alamy Banque D'Images
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Report of progress 1874-1889, A-Z .. . 52° and south 43°. The north limit of dyke is marked by a small streamflowing into Althouse s miU dam. It extends along roadfor 400 and is probably half that thick, succeeded by redshale along road for half a mile, when the north flank ofthe Kinsey Mount dyke is met with, the first dip being S.65° E. 75°. The trap here is lighter in color, and very much brokenrendering dips doubtful; but it shows a general steep incli-nation to the south-east. Trap extends about 400 yardsalong road, slightly quarried at south end where the dip isS. 25° E. 60°. A variegated red shale and sandstone occurshere with it, dipping N. 65° E. 52°, apparently but little dis-turbed by the trap. Further south on road red shale dipsN. 56° E. 25°, though the road is strewn with trap bouldersas far as Hertzog s mill. On the extension of the KinseyMount dyke west, south of Althouses Forge, a shaft 50 feetdeep is located, close to road, known as Bishops mine. ^econcL^eolSwrm^ 9a.im. ^epor£l).3, ni.Z.yD. 219. 220 D. REPORT OF PROGRESS. E. T. DINVILLIERS. It has been abandoned for some time, but is said to haveyielded about 1, 000 tons of ore. North of W. Esterlys house to the south of mine, shaleoutcrops, dipping N. 10° E. 48°, succeeded by conglomeratedipping N. 20° E. 40°. A narrow strip of red shade borders the south flank ofthe southern dyke, being divided from the succeeding con-glomerate by a gentle cove running along east of and paral-lel to the Perkiomen pike. No conglomerate is found east of Antietam creek, thecountry south of Kinsey Mount and through Stonetownbeing everywhere red shale and sandstone, though coveredwith many trap boulders along the Stonetown road. Dips in shale east of Antietam creek are N. 56° E. 25°, N. 30° E. 26°, and N. 35° E. 40°, the latter west of J. Gil-berts house. West from Antietam- creek a belt of conglomerate ex-tends to the Schuylkill, from 500 to 800 yards wide, andbecoming more and more calcareous as it

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