THE CARBONIFEROUS SYSTEM. 95 
greenish shales, containing Levorhynchus mesacostalis, Spirifera disyuncta, 
etc., Chemung fossils, characteristic of the upper layers of the Erie shale. 
Here, then, we have the base of the Lower Carboniferous series. The first 
of the Chemung fossils occur about sixty feet below the base of the Cleve- 
land shale, and it is possible that the intervening mass may be an 
element in the Lower Carboniferous series, up to the present time not 
sufficiently well known to be identified and described. As has been 
stated, near the Ohio an interval of 147 feet separates the Cleveland 
shale from the Huron shale below, and the material filling this interval 
has similar lithological characters to the upper portion of the Waverly, 
but no fossils have been obtained from it, and it is therefore impossible 
at present to say whether it contains any representative of the Erie 
shale or not. | 
The following is a minute section taken at this point by Mr. R. D. 
Irving, one of the assistants on the Survey: 
SECTION OF THE STRATA BETWEEN THE CLEVELAND AND HURON SHALES, SCIOTO 
COUNTY, OHIO. 
Sandstomen(CityeWied GE) seern co. ihisssuotonsceonetes deus cn lowe’ easels edsebosmalecseos ce ae (HY 
Blue and drab shales........... ss.0 AS SN GSR NE COEUR SRE ee SOR NON ti BY, OM 
Belay soaconsatsessesissceneies RENN PCR SSN is Neath eae hes seal cuales ck eswaetessens agentes 
Blackssinalen(ClevelamadwySnale)cs.carcc cctisvecssces ost esese cevtevecs socecelugscsveeions 15’ 6” 
SATCU SLO ME mecca eran on OMe Gr Osey se eU ST SN eRe TEN soseleubonhice Souaceuseuccous cetdentee’ Nees 
Shralestam lsat SLOWER tvs, coseea soc cee ceees Sceddoass she sow a eiGehasnese talus sbeogeees Lae Ot 
Sand Stome rane peng) Mae wy ak ree ee Ady «Renate ad 2 taal 9/ 
Shale, with three layers of sandstone..........0.sccecrcoocsssesvesecs covscececees 6. 6” 
SEU IVGISIUOTIVE)  bacindo8 So o800 coc CeO EGO eaCOROHE SHO ECR ERE IO PACER EET REO Cree eEAETee Ngan 44 
Shale, with three layers of Sandstone.............sceee cesses cesene secees cee scecee > GH 
AINSI epee nance ces ce casas sseeonosea ecu cnlulese ve caaiseeldsealeustece seceeeseeess Din Oca 
Shalewwith three layers Of SAMAStONC....c5:.0:c.-s.sescsecosse) cccece coo cee cee ces OA 
SSHTIVG ISLIOPO® Schade ca SUG SIO SEGOEIS TASS CaCO GLEE EEE IRS re ah Se oe eA 
SHOE is Cs ee Ne nL APR VES A RAP OMAR aR SP 5G 
RSHIEIVOISIGPAYS) Bec octiclecide006 OSE CREO GEO Or Bt CEDRUS Ost SAC CRETE Orne Mr ee are pane arts WANE 
Slat Rear ere eet aes GOs ovat ess tin slug aig dasth uss tsb ee Chard MOveialltald vad alecwrledee’ 81 9% 
SINGS LOINC Meee ene ens ote lee co ouans cman ie ae esses decade stioe eh me hcisens Soalaca sch Rene 10” 
Re Lieall Gameerenteneyterencteneae Mma s ears GGas eal On Wel aso a cee udedeiusecentecemesswsiesesccoes Salaa 
SEETENGISLROTEXS) code SE SSOS CHGS OOS aa A EIEN SU EG EE 1 aie 
PHBE coconod 06) BASE BR BOA O8 BUR IOO EE EE SEIS SEES EEE Io ao TU ASL Oa 4144 
SEIDGOISIVOIDNS) casco cOL OUCH CIO ROO ECHOES T(r Pee BUR ERE rs ae Bg 26 10/4 
Three:layers of shale amd: sandstOne.........0...s0scessceceess ars soe evsces coeece Hehe, 
Baan SiG inc waenemeen tec mee eid ued eu etl, iy odo UL chuu sealteaiieRk dae dale taint DAZ 
SS Hat Le trmne stents eee eas Seek are MGR EDL Rei sik sdich S ca ae vo kl uhoem aeltenl alenartgl oa 10/’ 
SAT StOM Cpeemseane eee ane es Me. lc i's yy ue'elncad HAMSTER ML raNGee ce ewase 10 10% 
IMAL Ge oercte selene deerme eee tee eco wes eeises Ne sae\chcossusoheasniendesinclgthe doswliscescesiee ies 
SAIC SLOM Cuemeretencecmmecen cases ece cat siecocns casceccccice dpcetaliceene ens eocsceevceeecs AG 
