A8? GEOLOGY OF OHIO. 
laboratory of the Manhattan gas works, New York, with favorable re- 
sults as to the quantity of gas, and as to its high illuminating power. 
A combined section of the strata seen on the upper part of Bear Creek 
is as follows: | 
Ht. In. 
13} BlossomOni Coady ees Ge kec doe oee eee soles ene ee aE ye out i) 
Qe NOTEXPOSER Ase ike SOMA EA ORG BR Eanes LE UA 4 EEA Ae 20 
Baw LAME STON Sie veils swears Suan RNa cu ctale gutaete clea AUN maton a CWA Ue Be Zn) 
ANS NOTE POBCU RL ect otea ccnincascanss scenes ecneensencena bee con su euicachon see ee nen ean 15 0 
HU MMIC SEOME eraeds ie sce Biaccce: costco Mob tree Seete monet Gon cle Mere Ene Ra NR ene etn 4 0 
Go SeINOtEX POSER ere caihe's Lae cile lite sdatecets Bae Soca Se ANCOR oat Hea ELL Ena nana nu 60 0 
Msi SAT ASTON E Paes Wee sass Giannis sovceale Geese ee eane eae RMe eee Ee eee ene BL A 4 0 
8. Shale 6 0 
ORATOR LE LAM o8 kde sea awshd oeee ewe aR eae Uh sok CONC eRe CON eae One 3° 0 
10, Slate parting.......... dibs slo ealesvd e's G'ssialsp vos bole alent atue ee Metered ena camm sn cement | OMURE 
TH ic Dror: 8 Ra iets rie RPE EC MSCe HEART ini cis cre ele U ten Bedi Beoaouece Soc. ce ee Zi) 
MO IN OthEXPOSCO eo e..c.aencccoaes Neeeeasenucceuscceee mncmesmasiemcbeeledeeee ite sseteereemaeee 27 0 
PS MSAMASEOME ...cesc.s she sw ssctecs ceed cossieaeoddaueees setesueeseceeniben serene cee aera 8 0 
HA ETAT OR ce CLL coe dieses oes coateee ecaiees cele cicleleD etlemtcdecmreee alee ame nea ere a ee enn ea NEN 6 0 
Jos) Aamin ated Sandstone pce or seue eee cree ec en eee eee een cence a teentes 10 O° 
16. Shale... sess cesses ces ceeeeeees ceeeen seeeee eneees senseeee cos ceeseeeee eeeees cee one cee cones 2 0 
liven limestone layersyiwhite and@buiie er. s.ceseseseesceeeceneseseeseeclececcenecee nn Omen) 
(See Map XI., No. 22.) 
About forty feet above the upper coal, of which only a faint trace was 
seen, is a stratum of blue limestone. 
The strata en Bear Creek dip regularly to the south. On the lower 
part of the stream, before it leaves Salem township, we find in its bed a 
well-known stratum of earthy, buff limestone, with which are associated 
other limestone layers, forming a group which has quite an extensive 
range in the eastern part of Washington county. Under this group lies 
the lower Salem coal, found in many places on Duck Creek. On Whip- 
ple’s Run it is changed to cannel coal. Some of the limestones and the 
associated shales are fossiliferous, containing, on Bear Creek, teeth of 
fishes and comminuted shells. <A layer of slate below the coal is also fos- 
siliferous. This limestone group on Bear Creek, in the south-west corner 
of Salem township, passes under the dividing ridge and is seen in the 
bed of Duck Creek, near Mr. Flanders’s, about half a mile above the 
Cedar Narrows bridge, in Fearing township. From this point it is 
readily traced in the banks of the creek and adjacent side hills up to 
Salem, and up the East Fork to the Noble county line. The coal under 
it is seldom more than three feet thick, and it is generally less. This 
seam is the equivalent of the Pomeroy seam and of the Pittsburgh seam. 
It has been traced from Pomeroy through Athens and Morgan counties 
into Washington county. On the West Fork of Duck Creek the lime- — 
