820 GEOLOGY OF OHIO. 



eighty feet deep has been bored, which Col. Churchill believes to have 

 penetrated only the Waverly sandstones and shales of the upper or Logan 

 series, certainly no coal seams nor rocks of the Coal Measures were passed 

 through. 



Mr. James D. Poston, of Logan, who has had a large experience in ob- 

 taining ores and limestones for the Logan Furnace, and has a great famil- 

 iarity with the geology of this region, states that in all his operations, 

 when digging or blasting below the Maxville limestone, or below the ore 

 which marks its horizon over areas where the limestone itself is wanting, 

 he has invariably come directly down upon the Logan sandstone. 



The next deposit of limestone believed to belong to the same horizon 

 with that at Maxville is seen a little east of Rushville, in Reading 

 township, Perry county. In the deep ravine between East Rushville 

 and West Rushville we have undoubted Waverly rocks, traceable through 

 a vertical range of nearly one hundred and eighty feet. Resting di- 

 rectly upon this series of Upper Waverly rocks come in, to the eastward, 

 the Coal Measures, and at the very base of these Measures is the lime- 

 stone. At one point I saw a thin ore four inches thick imbedded in a 

 bluish clay. Fifteen feet below this clay — the interval without exposure 

 of rock — I found undoubted Waverly. Farther on I found what I be- 

 lieved to be the same ore embedded in similar clay, and five feet above 

 ten feet of Maxville limestone. As the top of the limestone was not 

 seen, the true interval may be even less than five feet. This limestone 

 was largely quarried on the land of John P. Hodge, in section 26, Read- 

 ing township, Perry county, for macadamizing the Zanesville and Ma'ys- 

 ville turnpike. Stone for this purpose is now obtained from some 

 limestone located further east. Fossils are more numerous here than at 

 Maxville. 



The last deposit of this limestone to be noticed, is found in the eastern 

 part of Perry county and in the western part of Muskingum. It is some- 

 times called the Newtonville limestone, from the village of that name. It 

 forms the bed of Jonathan's Creek and Kent's Run for several miles. 

 Wherever the streams have eroded channels sufiBciently deep, the Logan 

 or Upper Waverly sandstone and shale are to be seen. In Section 16, 

 Madison township, Perry county, Jonathan's Creek has scored its bed fifty 

 feet into the Logan sandstone, which contains all the usual fossils. Four 

 feet of sandy shale separate the sandstone from the limestone, which is 

 here seventeen feet thick. Above the limestone are rocks of the regular 

 Coal Measures. 



We may, I think, very reasonably conclude from the above recital of 

 facts that the Maxville limestone rests upon the Upper Waverly or Logan 



