548 GEOLOGY OF OHIO. 
A general outline section was taken on a branch of Stillwater Creek, 
east of the railroad station, which is approximately as follows: 
Ft. In. 
1. Coal blossom. 
Be) MN OU OXPOSCO Aaron ce care cae Uc seslece waits gare celae mu ee Me ceeRa a sre ee Sina Haas aN 30 0 
3. Coal blossom. 
Al SIN OG CX POSCA Ne eae aes clie cis Sores eee tae oe ee OTS STS Re ce ATT A ONCE ED SBP 
HEEL TIM CSTOME foe eeite olases dene cavers faves bales a stormed cnsioabe ie tc ie aa asin e ai sO a UNOS Ana EOS 1 0 
Gu Cementilimestone estimated si. syieteres cece eeeee ce eee eee ROO 
Lois INOTISCOII eee ec iecleas sos oce. oeeensvos eu etis See Ue NH OTe ea ee neta Ica Ry ee) RC) 
8. Coal, upper Barnesville seam (not measured). 
QO UNOb SCO: Me ets cateeaiieducaaslce aed oocjaneiuetenaila ces ater eettcel piesa aovae een BEE ut MABMUR CL (Bi (0) 
LOR MIM SSEOMC Hevea ee ed ede sogewkmeeload onecuctamcls cee tesa elec le OREN eC eee tee Re te ea IC Tea CO 
1D Cement) lit estome ie ccccs oS deceeeck sean ee eT OO On Oa a OG 
Le MIN OLE BE STA cae rote We eld idalsret ojbutelelce welsle of wicgvoue marae vers pene cats Pat arse Re sliced aaa nM Re LC MC) 
13. Coal, lower Barnesville seam (not measured). 
(See Map XIV., No. 1.) 
The larger spaces in this, and in all the sections, were measured by an 
aneroid barometer, and can be considered as only approximately accurate. 
The weather, by its changes, always affects the instrument. It is also 
often very difficult to make the exact corrections for dip. Mr. Nathan 
Bundy first called my attention to the upper cement in the last section, - 
and made the suggestion that it might be the equivalent of the cement 
limestone stratum at Warnock’s Station, on the railroad. The verifica- 
tion of this suggestion served as a key to unlock the stratigraphical puz- 
zle of Belmont geology. | 
The cement limestone last referred to, 2. ¢., the one twenty-two feet 
above the upper Barnesville seam of coal, was analyzed by Prof. Worm- 
ley, with the following result : 
SUTCLOUS MALLCLSeishssgacees ae iee sees ese eee ek eee Sea eee ake aL 17.78 
Alumina withitrace OfmM rome acc yeccdccun:seecccltaper eee centennenaec eee ncaa 1.40 
Garponate OLIN eee sales a ee eae eee co ee ela alshea sible sei y ee aaa RAR an me ede 62.50 
Carbonate of (Magnesia ee eek Mae BSNS LU eile cae se ae ee cete necro 17.48 
1 a) REO ne NEGO AI UU UI AACR IRAN Heli lol NU I oil 99.16 
The cement works of Messrs. T. C. Parker & Sons, in section 21, a 
little nerth of Barnesville, use a cement limestone found between the 
upper and lower Barnesville seams of coal. The stratum is five feet five 
inches thick, and is apparently quite homogeneous. It is not mined in 
open quarry, but by means of a drift-way. With the aid of Mr. Parker 
