STATE GEOLOGIST. 183 
distant, is 850 feet, making the eastern slope of the arch much steeper than 
the western one, as Andrews claims. It should be noted, however, that 
the dip on the western slope has not been measured at right angles to the 
direction of the uplift, which is nearly north and south, but at a smaller 
angle than go degrees, and consequently the dip stated is less than the real 
one on this slope. On the east side the measurement has been made on a 
line approximately at right angles to the line of uplift. 
After entering Ohio the arch flattens and is soon lost, while in West 
Virginia, according to Andrews, it becomes more prominent, attaining - 
a maximum near Petroleum, Wirt county. 
In his report on Washington county, already referred to, Andrews 
gives a section at the mouth of Conley run, the top of which he considers 
the Cambridge limestone. Forty feet lower is a coarse sandstone which he 
calls the First Cow Run. The section is as follows: 
Feet. Inches. 
Fossiliferous limestone (Cambridge) ...... 1 6 
CCU O Warsi alese cn. sarge cp hricra te conch econ ewe cueis Ghee ele 18 0 
oliettavgea © alll seen pee rcen aren Ne cdr Rtg Sows Sy Jive woe, 0 8 
CWlawaamdec oO allies Nareccsh ee cus aialen wane ore ees eee 0 6 
Imire Elewy, Iie Col@Resl scosacaccctucudsouuc 0 6 
Coal ee wi rae ine ore rotate Mea eye des utes 0 6 
INO GRRE XD OSCU Ta Karas cstiete saetalcensiere cate Otommcle 20 0 
SOOCPOCHE, 1ROFSE OOUD IEW oobo060000600000006 25 0 
Iron ore, adhering to sandrock ............. 0 6 
Blue clay shale, with modules of iron ore ... 1 6 
Level of water Ohio river. 
The limestone, however, is the Ames and not the Cambridge, and 
hence the sand below cannot be the First Cow Run. The limestone has 
all the characters of the same formation farther west and there can be no 
reasonable doubt as to the correctness of its identification. Its presence 
above drainage appears all the more remarkable when it is considered 
that westward it is not found above cover nearer than the valley of Federal 
creek in the western part of Morgan county. The distance between these 
two exposures is about 4o miles. Since this limestone is found above 
drainage along Conley run, it follows that both the Meigs Creek and 
Pomeroy coals are due in the adjacent hills. The seams are found at their 
proper positions, but both are small and unimportant. — 
It is of interest to note that the Newell’s run pool lies. on the western 
slope of the axis, and as will be shown later, the Bosworth pool on the 
eastern slope, the crest of the axis being unproductive, if the holes thus far 
drilled can be relied on. 
The wells are all small. Even when they start at from Io to 25 bar- 
rels or more per day, they soon decrease so that their output is a small 
fraction only of their initial production. However, after their settled pro- 
