PENNSYLVANIA. 



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49. This road follows the York county belt of the Cadorus (S.-C.) limestones, with the south- 

 east edge of the Trias, not far off on the right, and the north-west edge of the Azoic country on 

 the left. Pigeon Hills (Azoic or perhaps Potsdam?) to the right before reaching Hanover. Trap 

 dikes just west of Hanover; and at Littlestown. 



50. The great Springfield furnace limonite mines are (by Mine Railroad) 5 miles to the south. 



51. Old and extensive Clinton (fossil) ore mines here. 



52. Extensive fossil ore mines at Bloody Run, east of Mount Dallas; and in the gap of the 

 mountain approaching Bedford. 



53. Mineral waters. Abundance of Helderberg and Oriskany fossils; interesting and varied 

 geology; iron mines around. 



54. At north end of, but outside of the Cumberland coal basin. 



55. This and the following stations are at old iron furnaces, not able to use their fossil ore close 

 by, and therefore hauling Sil. -Cambrian limonites from the Warrior Mark Valley, over the Bald 

 Eagle Mountain. 



56. Entrance gap to the Nittany Limestone Valley full of iron ore banks. 



57. Trenton fossils abundant here. To the south-east, seven miles, Nittany Mountain, in the 

 centre of the valley; fine views; curious geology; synclinal ships-keel mountain; turnpike road. 



58. Summit of Allegheny Mountain and east edge of the bituminous coal fields. Here Powell's 

 semi-bituminous coal mines. 



59. Many coal mines along the Moshannon above and below this in the 1st subdivision of First 

 Basin. Road gets into 2d subdivision, over a low anticlinal. All the mines along this road are on 

 beds of the Allegha"ny River series. 



60. Here enter Morrison's Cove by a gap in the nearly vertical Medina and Oneida rocks of 

 Dunning's Ridge. Fossil ore outside (WO; Bloomfield limonite mines (very famous) inside (E.) 

 U. S. cannon made at Pittsburg from pig metal made at the furnace in the gap. Sinking springs 

 up the run. 



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