BUTLER COUNTY. 393 



this same south-easterly direction has been shown to be that in which 

 the glaciers advanced in this portion of the State. 



Some of these streams, as, for example, Seven Mile Creek and its trib- 

 utaries, run largely on rocky beds, and thus show themselves to be of 

 comparatively recent date. Others again, as Twin Creek and Indian 

 Creek, agree with the deeper valleys of the county in having the rock 

 altogether concealed by heavy alluvial deposits, and thus lay claim to a 

 longer history. 



The highest land of the county is not more than 650 feet above the 

 Ohio River at Cincinnati. The highest land measured is two miles west 

 of Jacksonburgh, Wayne township, on the farm of Col. Phares. Its 

 elevation by barometer is 642 feet above the base above named. Locke 

 gives the elevation of a point of Cliff Limestone that barely enters the 

 county on the north line of Milford township as 601 feet. Two miles 

 due west of Oxford, on the Fairfield turnpike, an elevation, determined 

 by the level, occurs of 610 feet above the Ohio River at Cincinnati. The 

 elevations of a few of the prominent points in the county are appended, 

 as obtained from canal and railroad and turnpike surveys. For several 

 of. the elevations here recorded, I am under obligations to Prof. R. W. Mc- 

 Farland, of the Ohio Agricultural and Mechanical College : 



FEET. 



Hamilton Canal basin above low-water at Cincinnati 169 



Low- water of the Miami at Hamilton 131 



iJiddletown, canal level 211 



Oxford, grade of railroad at depot 480 



Oxford, highest ground within corporation 5 J2 



Somerville 334 



Jacksonburgh .. 543 



Pliares's farm, two miles west of Jacksonburgh 64"2 



Snively's Hill, one mile south of Jacksonburgh 563 



Turnpike, two miles west of Oxford : 610 



North-east corner of Oxford township, on Darrtown pike (formerly EUey's 

 tavern) by Locke 601 



The lowest ground in the county is to be found on its southern bound- 

 ary, in the Miami valley. Its approximate elevation above the base 

 already named is fifty feet. 



The principal areas of the alluvial lands and uplands of the county, 

 as they are distinguished from each other, are represented in the accom- 

 panying map. The former division embraces the valleys both ancient 

 and modern — the eroded regions from which the rocks have been carried 

 away to a depth at least below existing drainage courses. These areas 



