278 GEOLOGY OF OHIO. 
Coal No 8c is here sixty feet above No. 8, separated by sandstone, eight 
feet ; limestone, fifty feet; clay shale, two feet. The intimate structure of 
the lower divisiion of No. 8 is as follows: 
FT. IN 
De Bone?” Coal Viajes ery ea egeere tc eee Prete te ot Epc tay Ee 0 2 
elie. OX 07} Inne metho etn als ea ates ME A do bie Go aeoau aon Gaue 2 0 
3s), Clay parting 3: oc choc orismee areere Seer ae errata peratste Sear 0 2 
AS COANE gb E RRA eas eR Ie 1 ara ave p TAT Sey EE Ra permet are a ee 0 10 
SONG lay) parting oP. Se les SE No es Se eR Siete Py Sa ers rae 0 4 
Or, Coals soe se eee Sooke eG e ae ese ee SEE rere ea eee 2 0 
5 14 
In No. 2 the pyrites band is found one foot from the top and one inch 
thick. No. 41s highly prized by blacksmiths, and is said to be remark- 
ably pure. Nodules of pyrites are not common. The coal on this run 
is mined to a considerable extent to supply St. Clairsville, but is not re- 
garded as equal to the coal from the Wheeling Hill mines on the National 
“Road. Specimens from the top, middle, and bottom benches were for- 
warded for analysis, and gave the following results: 
TOP. MIDDLE. BOTTOM. 
Specific gravity......... SS oD ODDS BH SUES 846556 HodC 1.343 1.323 1.304 
WIDISIITRS) Aas aQodeoo 66bas5 bcos sob550 bbabasdooeos 4 1.10 1.20 1.00 
INS acok boos eobeGods dd aooU bogs Cob oes BoD ea Goud 8.00 5.00 5.70 
Volatile combustible matter.............-...-.-.- 33.90 30.00 32.00 
MEXCONCATDON G tse ooctiare sacle sieiee wie aciate sie/ec ee tens 57.00 63.80 61.30 
© MIROUEMS) 350.5 oddc0s cocoon pa88Se DdagSo UESSOSeasE 100.00 100.00 100.00 
SUSU NUDE CES Be eS Bem ae abe dhe Gbu LAS J BGOdEOOGne 4,53 2.47 1.92 
Suliphrerslettisimecokeseeeemreer eee see nena ects 2.19 1.09 0.82 
Sullphurttonmincvoterhercolkenereecesee ere rete 3.37 1.58 1.22 
Fixed gas per pound, in cubic feet ..---..--.--..- 3.65 3.12 3.42 
CNS Ia eee aloha male nis 2 wteeae waters patra tal etfol aha Sn aCe ep a "Gray. . Gray. Gray. 
COKE aoe AA ahah ate ates ea aye al chai tara nee eat Compact. Compact. Compact. 
On McMahan’s Creek Coal No. 8 is mined for domestic use. At Mr. 
Johnson’s opening the lower coal is four feet eleven inches, and the roof- 
coal is single, fourteen inches thick. In Mr. Brown’s opening; not thirty 
yards distant, the lower coal is four feet ten inches, while the roof-coal is 
double, five inches and twelve inches, separated by six inches of shale. | 
Colerain Township.—In the northern sections of the township the land 
lies at such an elevation that the ravines barely reach Coal No. 10, which 
here seems to be quite thin and is not worked. The runs which empty 
into Wheeling Creek show Coal No. 8 very finely for a mile or more above 
