592 



C. WHITTLESEY ON THE PHYSICAL 



Porter's furnace, Austintown, sump .... 



Ewing's boring, Austintown, south line .... 



Paris township, Portage County, northwest part . 



Charlestown, Portage County, one half mile west of centre 



Edinburg, Portage County, on Barrel Run 



Tallmadge, Summit County, Northwest Six Corners sump 



Tallinadge, Summit County, Harris mine one half mile east outcrop 



Tallmadge, Summit County Coal Company's old entry 



Tallmadge, Summit County, Whittlesey's old entry 



Tallmadge, Summit County, old entry, south end of coal hill . 



Springfield, Summit County, De Haven's old entry 



Coventry, Summit County, A. Brewster's old entry 



Chippeway, Wayne County, Wood's bank 



Chippeway, Wayne County, Crawford's old entry, near Clinton 



Lawrenceville, Wayne County, on Newman's Creek 



Massillon, Stark County, Union Company outcrop 



Massillon, Stark County, Massillon Coal Company, mouth of Newman's Creek, old entry 



Massillon, Stark County, Union Company's sump 



Massillon. Stark County, Kilpatrick & Co.'s old entry on canal . 



Massillon, Stark County, outcrop on Shelley's Run 



Three miles north of Millersburg, Holmes County, about . 



Coshocton County, H miles west of Warsaw 



Coshocton County, Newcastle, near west line of county, western outcrop 



Muskingum County, near Brownsville, 37 miles east of Columbus 



Four miles west of Brownsville, western outcrop, about . 



Outcrop on the Ohio River near the Little Scioto, about 



Outcrop near Jackson County court-house, about . 



332 feet. 

 305 feet. 

 470 feet. 

 430 feel. 

 440 feet. 

 517 feet. 

 527 feet. 

 498 feet. 



512 feet. 

 498 feet. 

 487 feet. 

 525 feet 

 480 feet. 

 4G3 feet. 

 410 feet. 

 3G1 feet. 

 346 feet. 

 346 feet. 

 371 feet. 

 393 feet. 

 360 feet. 

 348 feet. 



513 feet. 

 270 feet. 

 400 feet. 

 200 feet. 

 195 feet. 



These figures extend over a space along or near the outcrop about four hundred miles in 

 length. They show that the rim of the coal basin in Ohio is nearly level, as might be ex- 

 pected in a country where the summits of the hills lie in nearly a horizontal plane. The 

 variation from such a plane seldom exceeds one hundred feet, as will appear from the fol- 

 lowing table, embracing water-crests and adjacent highlands in different parts of the State. 



ELEVATION OF THE PRINCIPAL SUMMITS IN OHIO. 



Summit of the Clear Fork of Mohican, Owl Creek, Olentangy, and Sandusky Rivers, southeast 



part of Richland County, highest land iu the State 

 Summit between Clear Fork and Pine Run, north part of Knox County . 

 Summit between Six-mile Run and Schenck's Run, north part of Knox County 

 Summit between Schenck's and Ball's Run .... 



Summit between Jerome's Fork and Muddy Fork, of Mohican, northwest corner of Wayne Co. 

 Summit between Killbuck and Mohican, southwest part of Holmes County 

 Summit between Killbuck and Black River, Medina County 

 Little Mountain House, Lake County (conglomerate) 

 Summit near Akron, Summit County (conglomerate) 

 Hillsborough, Highland County (cliff limestone) 



Coal Hill, Tallmadge, Summit County ..... 

 Brookfield, Trumbull County (summits of hills) 



Mantua, Portage County (summits of hills) .... 



Summit Sandy and Beaver Canal, near Hanoverton, Columbiana County 

 Somerset, Perry County (conglomerate) ..... 

 Greenville, Darke County (silurian limestone) .... 



$KBtamit of Blackwell's Fork and the Anglaise, Hancock County . 



