Mar., 1910.] Pennsylvanian Limestones. 1 1 9 



highway. It was formerly quarried on both sides of the ravine 

 for some distance and burned for Hme. At this point it hes at 

 1007 above sea. 



Baldwin Outcrop. A hah' mile south of the last outcrop and 

 on the Jesse Baldwin farm this same stratum may again be seen 

 in a ravine in the rear of the Baldwin residence where it is 2 feet, 

 3 inches thick and overlies IS inches of coal which was formerly 

 mined on this farm to a limited extent. By topographic map the 

 limestone lies about 1010 above sea. About 200 yards east of 

 this point and across the road fragments of a limestone are lifted 

 in plowing and the stratum would seem to lie about 1050 above 

 sea. 



Davis Well. This elevation w^ould seem to be confirmed by 

 penetrating a limestone at 1050 in a w^ell at the residence of George 

 E. Davis on the Youngstown-Boardman pike. The Davis well 

 is J mile southeast of the Baldwin outcrop. It would seem that 

 the second limestone is the Uj^per Mercer. If it is the Upper 

 Mercer the interval is greater than anywhere else found. 



Moyer Spring. At a point \ mile south of the Davis well and 

 1 mile southeast of the Baldwin outcrop a limestone is found in 

 a spring at the sawmill on the Samuel Moyer farm and lies at 

 1030 above sea. 



Geiger Well. On the C. T. Geiger farm h mile southeast of 

 the Moyer spring a limestone was penetrated in a test-well at 9 

 feet lower than in the Moyer Spring. 



Walters Well. At the residence of E. C. Walters 1 mile south- 

 west of the Moyer Spring a limestone occurs in the well at 1018 

 above sea and about 500 yards northwest of the Walters residence 

 the Low^er Mercer is exposed on Mill Creek at about 1000 above 

 sea. As seen here this stratum is 2 feet, -1 inches in thickness and 

 presents its usual characters. It directly overlies a black coaly 

 shale varying from to 18 inches in thickness. 



Greenhouse Hill. Returning to the vicinity of Youngstown 

 a third limestone is found f mile east of the Lanterman outcrop 

 and \ mile north of the township line on the Youngstown-Board- 

 man pike. It outcrops in the gutter on either side of the pike 

 a little above the greenhouse. The limestone is dark blue, fos- 

 siliferous, 2 feet thick, underlain by coaly shale, and lies at 1076 

 elevation. No other outcrop of it was found in this locality. The 

 Lanterman, Baldwin, Davis well, and Greenhouse Hill limestones 

 are suthciently close together to conclude from them that the 

 limestones found at these points are the Lower Mercer, Upper 

 Mercer and the Howenstein. 



Dr. Newberry in his report on Mahoning County gives a sec- 

 tion of a boring made near the south side of Youngstown Town- 

 ship in which three limestones were penetrated. [Ohio. Geol. 

 Sur. Vol. Ill, p. 803.] They are between tops, lower and middle 



