184 THE DEVONIAN AND CARBONIFEROUS. |bull.80. 



The following is a tabular expression of the classification : 



Feet. 



Upper Barren Measures (?) -. 300 



Upper Coal Measures 350 



Lower Barren Measures 400 



Lower Coal Measures 400 



Conglomerate 



Maxville limestone (near Newtonville, Muskingum County, 15 to 20 feet thick, and 

 8 to 10 feet thick in the counties south). 



Cuyahoga shale 150-250^ 



Berea grit 60 '. 



Bedford shale 75 fWaverly group. 



Cleveland shale 21-60J 



Erie shale (Chemung) 



The " Chemung" of New York is considered to have thinned westward 

 and to be represented in the Erie shale. The Catskill, according to the 

 author's view, thins out and does not appear in Ohio. The Vespertine 

 of Pennsylvania changes its character on passing westward, and is the 

 Waverly group in Ohio. The Unibral of Pennsylvania thins, disap- 

 pears, or is blended with the Vespertine. The Carboniferous Con- 

 glomerate is traced as far as central Ohio. The "Maxville limestone v 

 of Andrews furnished fossils which were submitted to Mr. Meek, who 

 identified them as Chester and St. Louis species. 

 * In the year 1878 Mr. L. E. Hicks published two papers concerning 

 the Waverly group. In the first he stated that considerable discussion 

 had arisen in attempting to synchronize sections in southern and cen- 

 tral Ohio with a section at Cleveland, upon which Newberry has based 

 his subdivisions. 



The Cleveland section, in descending order, is as follows : 



Feet 



Cuyahoga shale 150 to 250 



Berea gri fc - GO 



Bedford shale 75 



Cleveland shale 21 to 60 



The Cleveland shale is the only formation which retains its typical 

 characters in central and southern Ohio. It holds a distinct fauna and, 

 in some places, bears a close resemblance to the Huron shale. "But the 

 two never exist together in immediate contact? The persistency of the 

 Cleveland shale has been demonstrated by its discovery in Delaware 

 County, southern Ohio. 1 



In the second paper Mr. Hicks reported that in central Ohio five dis- 

 tinct members of the Waverly group are found, in descending order, as 

 follows: 



Feet. 



5. Licking shales 100-150 



4. Black Hand conglomerate, or Granville beds -, 35-90 



3. Raccoon shales 300 



2. Sunbury black slate 10-15 



1. Sunbury Calciferous sandrock 90-100 



'Discovery of the Cleveland shale in Delaware County, Ohio. Am. Jour. Sci., 3d ser., vol. 16, pp. 70, 71. 

 The Waverly group in Central Ohio. Am. Jour. Sci., 3d ser., vol. 16, pp. 216-224. 



