176 GEOLOGY OF OHIO. 
Above Lake Erie. 
Coal of Brewster Bros. mine, Shaft.............scsscssscsereseee coves: 493.7 and 490 ft. 
* ‘ Hemmer O00) oer 0) ab rsRprpeemeRmoncacece tad icobocodsdee bc 483.5 
si MiddleburyeShatt, cee. ccccscsscaeccnocesscceee sects econo 464 
@ JBrewater "SlO WC s.:..cercshesececasscces sos cuceeer coe es weceaeronenes 409 
sem JOLERSE MINE —= NLC ccc. saesecreccciedsensercestcecan eee metmets 419 
ee Sohinsont imine. BAe, et ik eecew coca t eer eae eee 419.3 
‘S geF raiiklin} min esas. chess aaeaeeeaheens sees eee eee ee eee 421.8 
fp KF OUBE AMINE si acs cles tes Seovoacted seaaeaions sense ee eee 391.7 
fin oll PDO Waal ING te.scsous conesectcsesee see esestee nee ecer soteeaese 468 
oe) MIGSEER MIN Es. ccs teos aceveseeeees Ceca et een Peenee ha ee Re aC One meee 448 
Sr Pulton SlOpersicaic..tacssceccsvscssceceen lacescn se ceeeseeceteneres 384 
“ Barney McGue’s mine...... Sys SARE EAG RU NRE ae Rectan he 388.9 
{pi iOrawitordaSlo pe: ssc Aes Neeeseceeee ee a eee 338.3 
“Ground Hog mine........ sd aiawasdied wanesedeasecteweatoadtensess 349.6 
A DELC Are MIN Cc c. 2s iwessees erececsen eee ee neat eee one 334.5 
SE WIGWINFTN, WATE cosouadooove cooos0e Nicacacted Meee oT ae oer eeee ones 318.5 
ce IWilloweBankiminewNomlieees csc tases eee 342.5 
“Brookfield mine............... id ste all he aco aren ci on es 341.2 
«ATONE PILI C pessoa to dcucas consti as Ooh ects Cece coe eee 316 
* {Wariington MING 'f..cscc. cess cgcesscessaseoeseesceec sees 337 
. Pigeon RuMemine 2. .ccaconsnsecne ese cone eee eee ete 322 
The levels of the canal are also given to furnish a basis for com- 
parison of other elements with those above enumerated : 
Above Lake Erie. 
Summit level ceca eikene eae each ee, cmebeccato eee coe cone eee 396.66 
IDenvall srrepean \WRYOluE COmerelis 11) CUM cco000 00000.9000090 800605 0600000000000 060006 387.66 
e Clinton to Bultonmyssecscseceetese cee eran ec ee eee 372.66 
s Fulton’ to Massillon’ 23.8 seer eee ee 366.66 
In dealing with these figures, it is necessary to bear in mind that 
the elevations of the coal in different parts of the same mine have a 
play of 20 to 50 feet, irrespective of any general dip. The’ descent is 
often made very abruptly. This fact will remove some of the anomalies 
in the previous table. 
From the northernmost station, which is the Middlebury mine, to 
Krouse’s mine, sect. 22, Franklin township, there is a descent of 72.3 ft. 
The distance is 10 miles, and the direction is nearly southwest. This 
shows the fall in this line to be 7 ft. per mile. But from the same 
station to the Franklin mine there is a descent of only 42.2 feet in 83 
miles. This reduces the dip in the same general line to 5 ft. per mile. 
‘The latter figure is the more reliable, asa number of elevations agree 
with that of Franklin. 
