STRATIGRAPHICAL ORDER. 75 
particular. Both are at substantially the same elevation above Lake 
Erie, and more than this, the whole section can be carried along through 
an open valley without a break or interruption of any sort from point to 
point. 
Precisely the same line of facts will be shown to exist in several 
other fields to which this confusion of numbers has reached. 
The Magnolia section, as now extended, becomes so full and satis- 
factory that it is reproduced in the preceding diagram, Fig. XV. 
Following still further to the southwestward the line of the Cleve- 
land and Pittsburgh Railroad, we reach Mineral Point and Zoar Sta- 
tion, localities that must always be regarded with interest in Ohio 
Geology, on account of the use made of the sections which they sever- 
ally furnish, by Newberry, in his arrangement and classification of our 
Lower Coal Measures. The series shown in this general district is unu- 
sually full and interesting. 
Its lowest portion is found at Zoar Station, where the Lower Mer- 
cer limestone is found occupying the bed of the Connotton. This stra- 
tum cannot be well seen here, except at low stages of water, but it is 
very conspicuous in all of the county to the westward. Its coal, No. 
3 of Newberry, is of little value in this part of the State. 
The Upper Mercer limestone is more conspicuously shown at Zoar 
Station than the Lower Mercer. It bears a block or “ rock” ore, which 
is sometimes dug to a small extent, and it covers a coal seam which is 
more frequently of mineable thickness than the Lower Mercer coal. It 
is No. 3a of Newberry. The limestone is quite uncertain, but the coal 
almost always marks the horizon. Forty feet above the Upper Mercer 
limestone, or 70 feet above the Lower Mercer, the Gray or Putnam Hill 
limestone is found in the railroad cut. 
The section in its details is as follows: 
Above L. E. Feet. 
3617 Helin amp cally line stomeieeceocsesessens sche oc onchoeacosece cass. cones: 3 
2. Coal—Brookville (?), No. 4 of Newberry ............cscescseeees 1 
OnepL uN euor ain edu shal Cren..nsescts sees csewoade oeven seek cv ocidlavieldewase es weer 5 
ASM OAT TOC Kateas cseeve acest sesame ast « sasoaun ss ot wa rodeeueedee sitohecewsss 5 
Demme S Nall CBee eae sees Sete olive cabana Able sy casio bin Wueossmsetes Sets Senenc 5 
Gr C al MOMS LAR (4) cccsiccceccccecashacsescnensasecd dead odes inne ssescess 3 
EMSA LOC Kemi cetece ues co beee sec ost coh ccenccos es teiioossnceeGisesecsevessedies 23 
Siac halesnwithy rock 2 Ore y WatO) Auib-cet.cscsecccescsssescossocsac sosss. 1 
