Lesley.] 7b [jan. 2 and Feb. 6, 



All the above are on the south slope of the anticlinal of Brush Valley, 

 facing Tussey Mountain. The anticlinal may be studied where the lime- 

 stone rocks are seen dipping both ways (N. W. and S. E.) in the end of 

 the hill at the Furnace, and in the railway rock-cuts as the line makes its 

 semicircle down Half Moon Run and up Spruce Creek and Tadpole Run. 



Three miles further down Spruce Run a pipe ore bank was commenced 

 on the south slope of the Anticlinal, to supply works erected at the 

 mouth of Spruce Creek, for a patent process to convert the ore dii'ectly 

 into wrought iron ; but the patent process failed and the mine was never 

 worked. It sufficed to show that the ore belt or outci-op follows the 

 ridge along the north side of Spruce Creek towards the Juniata, but 

 coalesces with that of the Cale Hollow, or north dip, beyond Huntingdon 

 Furnace, and sinks beneath the surface, for no trace of it is found in the 

 Little Juniata River section, where the Canoe Valley anticlinal may be 

 seen replacing this of Brush Valley. 



Returning thus to Warrior's Mark Run, and the neighborhood of 

 Huntingdon Furnace, I have little to add to finish this report, except 

 concerning an ore belt, west of the Run, on the south slope of the ridge 

 in line with the Dry Hollow Banks. But before speaking of it, I shall 

 give the following section up Warrior's Mark Run : — 



At the mouth of Cale Hollow, in the north dipping rocks of the Spruce 

 Creek Ridge anticlinal, and 150 yards east of the mill-dam, or a mile 

 east of Huntingdon Furnace, there is marked on the map an old pipe-ore 

 bank, now fallen in. Lime rocks here dip N. 30° W. > 50°; but, by the 

 road-side, 300 yards to the west-southwest only 38°; and in the hill-side, 

 G50 yards to the west-northwest, 12° in the other direction S. 30° E. The 

 Old Seat Bank, No. 30, is 1,100 yards distant (up Warrior's Run towards 

 the N. N. W.) from this old bank. The Cale Hollow is thus seen to be 

 synclinal, and, allowing for the different strength of dips observed there 

 can be no reasonable doubt that the same ferriferous limerocks out-crop- 

 ping here outcrop also at the Old Seat Bank ; and I have so drawn the 

 Section A.B. 



The ore at this old bank is reported to have been extraordinarily 

 charged with sulphur ; but I could not learn exactly in what form. 



No. 30. The Old Seat Bank, on the east bank of Warrior's Run, 

 2^ miles below where the railway crosses the run (at Warrior's Mark), is 

 an old open cut with ore in its floor, abandoned many years ago for want 

 of pumping machinery of adequate power. What little liver-colored ore 

 is visible, looks lean, and much flint lies about. The area of the cut may 

 be 4000 square yards. Water stands in it to within 10 or 12 feet of the 

 top. It has been worked to a depth of 40 feet. About 30,000 cubic yards 

 of ore-ground has been taken out. Although much liver colored ore 

 like Pennington ore lies about, no pieces of sandstone are visible ; but a 

 good deal of flint is among the ore, as at Pennsylvania Furnace Bank. 

 Not much surface-ore shows in the neighborhood. 



