STRATIGRAPHICAL ORDER. 59 
The seam can be followed up the stream by numerous openings as 
far as Taylor’s Mills. It is here reduced to 2 ft. in thickness, and lies 
between the Upper and Lower Freeport sandstones. 
One more section in which the Clay Vein coal occurs can be found 
on the West Virginia side of the river. At Thompson and Miller’s 
brick-yard, just below the mouth of King’s Creek, the Lower Kittan- 
ning horizon appears for the last time above the river level. The sec- 
tion is as follows: 
SIMEVES, GQ DOETEC! 400060000000000000000000000000000 _00000150030000000000000000 84000000 10’ 
I. 
2. Tower Freeport coal, King’s Creek Seam.............cccccessrceeeseeeceeees 2/ 
3. Sandy shales and sandrock (L. F. sandstone, etc.) ...........00.seeee 95 
AV Mitclolle 1kaikrerormbiyes Gopill, Sisettjy WE. 55aG0000860609 650599080000 000000000000000 3” 
i,» JETIRS=@LENY cocoonged608 oabta0tiob 164000 cddoa0cbaedoodHbdcddo500 aboabe ucdHOR CCUG! HochoccKian 4/ 
Gams lalevandisandnockwecnesie- cote caste te er acsccicecencscdscceen socee 17’ 
t. Lower, Kittanning coaly Clay) Veins. 0.220.) 2. csdeccscecscinescorseeseesosce 2/ 
3, TCHS LENZ, MMTV! ceoscoad. con0d0800 066. 3 20086000005500008000000000 GOO0BOFOE 8” 
Gre Concealedutonowawateniussccaecacaieccsacesesiscecuccea| css scncclacecceccsesscenss 4’ 
It will be profitable to recapitulate the facts pertaining to the 
Lower Freeport or Roger coal, which is here known as the King’s 
Creek coal : 
1. It ranges from 2 ft. to 5 ft. in thickness. 
It is a little more than 300 ft. below the Crinoidal limestone (308 ft. on the 
Tarr farm). 
3. It ranges between 90 ft. and 120 ft. above the Lower Kittanning coal. 
4. The Upper Freeport clay and limestone occur about 35 ft. above it. 
Returning to the Ohio side of the river, we find no exposures of 
the lower coals between Island Creek and Will’s Creek, but the Crinoi- 
dal limestone sweeps from hill to hill, and furnishes a constant upper 
limit for our sections. On the north bank of Will’s Creek, a half mile 
above its mouth, we find the limestone in the middle of a long section, 
which is continued downwards, by a well record reported by Newberry 
in volume ILI, pp. 753-4. | 
The main elements are as follows: 
Crinoidal limestone, underlain by 2 ft. 6 in. coal. 
Interval ...... ... 104900000909005008005000000000 0600000005G000000 000000039000090000 265 feet. 
Coal, near level of creek, 3 ft. reported, Brush Creek. (?) 
Min Ger Alwar: scrcwusecetnset see sects bovenettn tej tinasy cavoeewesioeec dees seen ceelscn toasts 66 “ 
Lower Freeport coal, 4 ft., underlain by clay and limestone. 
