Lesley.] t)4 [Jan. 2 and Feb. 6, 



Kerr & Bredin. Bloomfield. 



Ferric Oxide 70. 67 Perox. Iron 78 .63 



Manganese Oxide 0.36 Manganese 0.29 



Cobaltic Oxide trace 



Alumina 3.91 2.50 



Magnesia 0.26 0.38 



Lime trace 0.34 



Pliosphoric Acid 0.19 0.134 



Silicic Acid 5.48 7.02 



Quartz 6.80 



Water .12.33 10.71 



The extra quartz determined by Dr. Genth, diminishes the percentage 

 of iron oxide in his specimens, and reduces the percentage of iron from 

 55.04 (Wuth) to 49.47 (Genth). Otherwise the ores are strikingly alike. 



The Kerr & Bredin Bank lies at the foot of the south slope of Hick- 

 ory Ridge, one mile W. N. W., of the Hostler Bank. In a dry autumn 

 Mr. Booking was directed to sink south of the old cut, and to mount 

 a pump. He reported a 12 inch "vein of ore" at 40 feet, and water 

 at 44 feet. A tunnel-way was commenced in the direction of the old 

 cut, which caved in, and the works were stopped. 



The continuation of these ores along the foot of Hickory Ridge, on the 

 north side of Gale Hollow, is proven by a range of " lively outcroppings." 

 In some places the surface is sufficiently rich wash-ore. One or two pits 

 (Bronstetter's) were worked, for Huntingdon Furnace, 1| miles west of 

 the Kerr & Bredin Bank, in "an irregular vein." 



Northeastward the ores continue to show themselves to Half-moon 

 Run, where "pipe-ore" is mai'ked upon the large map. See Little Bank, 

 below. 



From a small cut at Eyer's, on the east side of Half-Moon Run, 

 pipe-ore was raised many years ago. The limestone rocks at Eyer's 

 house, 100 yards south of the spot, dip to the S. 30°, E. > 21°. 



Another old pipe-ore locality shows now fair ore on the surface, near 

 two small trial pits. 



No. 28. Ho&tler Bank (see local map, fig. 26, and wood-cut fig. 36). 



This excavation occupies the northern slope of the Spruce Creek anti- 

 clinal ridge, as a large open cut, from which the ore was in old times 

 hauled to Pennsylvania Furnace, two miles due east of it. 



The recorded history of this important mine reveals the following fea- 

 tures. Wherever the diggings were made they went down through 

 "pipe " wash-oi'e which was occasionally mixed with lump-ore, to depths 

 of 60 and 65 feet, in all the shafts. 



One of these shafts passed through this wash-ore 65 feet, and then 

 passed through a stratum of solid limerock, varying in thickness from 10 

 inches to 2 feet. Below this limestone lay lump "pipe " ore, into which 



