SUPPLEMENTAL REPOET- HOCKING VALLEY. 817 



Maxville Limestone.— The Maxville Limestone rests upon the Wav- 

 erly, and its deposition marked a new era in geological history. It 

 is no part of the Waverly series, and has nothing in common with the 

 Productive Coal Measures. As th« last statement has recently been 

 questioned by my associate, President Orton, who has expressed to me 

 and to others his strong belief that the Maxville Limestone is one of the 

 regular Coal Measure limestones, having its true place about one hun- 

 dred feet above the base of the Coal Measures, I shall be expected to give 

 the reasons for the conclusions reached during the progress of the Survey, 

 and which I yet firmly hold. 



The Maxville Limestone, as found at Maxville, is taken as a represent- 

 ative of several similar limestone deposits in South-eastern Ohio, all of 

 which group themselves, as I believe, along the same geological horizon. 



These deposits are found, beginning on the north, (1) at Newton ville, 

 on the western side of Muskingum county, and extending along the 

 lowest valleys into the eastern part of Perry county; (2) in the western 

 part of Perry county, not far from the Fairfield county line, near the vil- 

 lage of East Rushville ; (3) at Maxville, in the south-western part of 

 Perry county ; (4) in Hocking county, a little below Logan, in Green 

 township; (5) at Reed's mill, near Hamden, in Vinton county; (6) in 

 Hamilton township, Jackson county, on the land of Enoch Canter, Sec- 

 tion 24 ; (7) besides these in Ohio, we find another and heavier deposit 

 of this limestone in the Ohio river hills on the Kentucky side, a few 

 miles above Sciotoville. All these seven localities I have carefully ex- 

 amined, most of them many times, and the results of these examina- 

 tions I will giveas briefly as possible. 



In the Kentuckj' locality last mentioned we find, on Josiah G. Merrill's 

 hill, one mile above Wheelersburg, Ohio, a section as follows : 



FT. 



1. Coal Measure rocks — ore, coal, Bandstone, etc 60-70 



2. Sandy clay and shale, containing two layers of iron ore and coal 



plants 8 



3.' Limestone fossiliferous, nsed lor burning and furnaces 31 



4. Limestone, highly sandy 15 



5. Not exposed 10 



6. Waverly sandstone, with characteristic fossils 215 



The above section was taken when the rocks were exposed in aa almost 

 vertical cliflF. 



Here forty-six feet of limestone were found under the Coal Measures 

 and resting upon the Waverly. The fossils, so far as gathered, are 

 specifically like those seen at Newtonville, Muskingum county, the most 



52 



