THE DELAWARE LIMESTONE 433 



The Tully limestone is a formation succeeding the Hamilton beds of 

 central New York, but as a limestone it does not extend west of 

 Canandaigua Lake. Zone 8 of my section represents Nos. 3 and 4 

 of Professor Winchell's section, which he called the "Tully lime- 

 stone ( ?)." The beds are impure limestone, differing to some extent 

 from the middle and lower Delaware, but not particularly resembling 

 the Tully limestone; and to the writer there does not appear to be 

 sufficient proof, from either the lithological or paleontological stand- 

 point, to warrant the correlation of this zone with the Tully lime- 

 stone of New York. 



THE SANDUSKY LIMESTONE 



In 1873 Dr. Newberry briefly described the upper division of the 

 Devonian limestones of Ohio, which he called the "Corniferous," 

 and named it the "Sandusky limestone." His description was as 

 follows : 



In the northern and middle portions of the state the Corniferous limestone 

 shows two well-marked and several less conspicuous subdivisions. Of these the 

 uppermost is a blue, thin-bedded limestone, from fifteen to twenty feet in thick- 

 ness, and is the rock quarried at Sandusky and Delaware. This I have designated 

 as the Sandusky limestone. 1 



Dr. Newberry did not mention any particular locality at Sandusky 

 as typical for the Sandusky limestone, but conversation with Mr. 

 Charles Schoepfle, who has been in the quarrying business for fifty- 

 two years in that city, and who distinctly remembers Dr. Newberry 

 and accompanied him to some extent in his investigation of the 

 quarries, has acquainted the writer with the exposures that were then 

 available. At that time, in 1869 and the early seventies, the principal 

 quarries in Sandusky were those on Hancock Street, in the vicinity 

 of the present quarry of Charles Schoepfle & Son. The present 

 large quarries south of the Soldiers' Home and Sandusky — Wagner 

 Stone Co. and the Hartman quarry — were opened much later than 

 the Hancock Street quarries. The oldest of the quarries south of 

 Sandusky is the Wagner, which, according to Mr. Alex. M. Wagner, 

 was first opened in a primitive manner about twenty-five years ago, 

 the Soldiers' Home quarry about sixteen, and Hartman's nine years 

 1 Ibid., Vol. I, Part I, p. 143. 



