WAYNE COUNTY. 531 
The following is such a section: 
Coal No. 7. 
18 ft. 
ee Coal No. 6. 
25 ft. 
Se) Vy | Ee renee Gray limestone. 
22 to 75 ft. 
: Coa!—local. 
tira Blue hmestone. 
Liege © COoal, 
AO ft. Sandstone. 
0-3 ft. rirerrer:rrr! Impure limestone. 
Shale, with iron ore. 
Coal, with Conglomerate in patches below. 
NEO iis <r} ~Waverly to bed of stream. 
The interval between the gray and blue limestone in the section varies 
greatly. At Mt. Eaton it is seventy five feet; on the east line of Salt 
Creek township, fifty feet; at Kirkendall’s, some two miles east of Fred- 
ericksburgh, twenty-seven feet; and at Fredericksburgh, on the west 
side of the valley, twenty-two and one-half feet. Throughout this part 
of the State, upon approaching the margin of the coal field, its strata are 
found generally reduced in thickness, bringing the coals nearer together, 
and showing an approach toward the original western boundary of the 
field. This was formed by Waverly hills. The same is eminently true 
of the interval between these two limestones. While for long distances 
in one direction the interval between them is almost identical, a line at 
right angles to this will show them approaching in one direction and re- 
ceding in the other, and generally near the western margin of the field 
they generally come closer together again. 
