632 GEOLOGY OF OHIO. 
In Jackson township coal has been taken out at several points for 
family or neighborhood use, and the seam has been marked at many | 
points where it has not yet been opened. One of the best known open- 
ings is at Johnson’s bank, in section 31. The seam here has a thickness 
of twenty-five inches. It rests on conglomerate, from which it is sepa- 
rated by a thin sheet of fire-clay, and is overlain by a heavy ledge of the 
same material. The seam is also shown in precisely similar relations on 
the land of Isaac Wickline, in section 22. 
The coal taken out from Johnson’s bank has a fair local reputation, 
and has been used by blacksmiths in the neighborhood with satisfaction. 
It strongly resembles, in physical characteristics, the Jackson shaft coal, 
and the following analysis by Prof. Wormley shows it to agree quite 
closely with that excellent seam in chemical composition. “Analyses are 
also introduced here of several of the coals, above referred to, that con- 
nect the Pike county seam with the Jackson Court House mines. Down- 
ard’s bank has an excellent local reputation. Whaley’s bank is not now 
open. Callahan’s bank yields a coal not inferior in any respect—at least 
as far as purity is concerned—to the best coal of Jackson county. The 
analysis of the shaft coal is added, to give opportunity for comparison : 
Johnson’s. Downard’s. Callahan’s. Shaft coal. 
RSJ ORG ING VAENTTIAY, dc nobbb0660 oncud000 1.318 1.3823 1.295 1.267, 
MOIS CURE ioons tes acta eter atte 6.40 7.70 8.00 7.50 
TALS es tac aA see cudu esis ebactetomeee 4.70 6.50 3.10 4,10 
Volatile combustible matter ... 33.60 29.30 26.30 30.90 
Hixeducanbonyrerscrernescscse. 59.30 56.50 62.30 57.50 
100.00 100.00 100.00 100.00 
RSROU OV eHDDe Raced ceuanhee qasdcdeaninondyenn 0.57 1.09 0.57 0.74 
Sulphur leit invcoke.......-.)...-.. 0.38 0.52 0.21 0.22 
Sulphur forming per cent. of 
COR Cee ae eaceaanoaen 0.63 0.82 0.32 0.34 
Gas per lb. in cubic feet.......... 3.64 3.82 3.80 2.51 
AGT AGEE Rat acdebe cee sod cent se sed aeaee ce Yellow Yellow ello Wein tenes 
CORK Ae eee Ea a seaaes Pulverulent Pulverulent Pulverulent _...... 
No coal has yet been found in Beaver township. The great amount 
of rock removed in the formation of the broad trough of Beaver valley 
might account in part for its absence; but there are reasons for believing 
that the conglomerate extended to the eastward in a promontory through 
Beaver township, Pike county, and Liberty township, Jackson county, 
separating two westward extensions of the coal fields—the first of which 
has already been noticed, and the second of which comes to view in the 
