IVA VERL Y SERIES OF CENTRAL OHIO 2 1 9 



names of stratigraphic divisions of the same or different rank. 

 The name Berea shale, proposed by Dr. Orton in 1879, 1 is 

 excluded, first, by the law of priority, since Sunbury shale was 

 published and defined by Professor Hicks the preceding year, 

 and second, because Berea had been used in 1870 by Dr. New- 

 berry for the name of a formation. The division termed the 

 Cleveland shales in the report on Franklin county is the Sun- 

 bury shale. 2 



4. Cuyahoga formation (shale) was the name given by Dr. New- 

 berry in 1870 3 to "the uppermost member of the Waverly group" 

 and was described as crossing Cuyahoga county and forming 

 the banks of the Cuyahoga River to the Cuyahoga Falls. 4 

 Originally the Sunbury shale constituted the lower part of this 

 formation, and in 1888 Dr. Orton separated the coarser deposits 

 of conglomerate and sandstone in the upper part of the Waverlv, 

 as found in central and southern Ohio, from this formation, under 

 the name of the Logan group, 5 and said this "upper member of 

 the series [Waverly] is wanting in the Cuyahoga Valley, or is at 

 least very inadequately represented there." 6 



Professor Herrick in 1891 from paleontological and strati- 

 graphical evidence showed that this upper part of the Waverlv 

 is wanting in northern Ohio, and said: "We can positively 

 assert that the Cuyahoga shale as represented in the northern 

 tier of counties is identical with that part of the Waverly lying 

 below Conglomerate I .... of central Ohio. The fossiliferous 

 horizons of Granville, Newark, Rushville, and Winchell's Division 

 4, on the Ohio River, are all above the top of the Cuyahoga." 7 



Finally, Professor Herrick stated in 1893 that in the "north- 

 ern localities the calcareous, concretionary layer, which has 

 yielded so abundant a fauna in central Ohio, was discovered at 



1 Am. Jour. Sci., 3d ser., Vol. XVIII, p. 138. 



2 Loc. cit., pp. 639, 642. 4 Rept. Geol. Surv. Ohio, Vol. I, Pt. I, p. 185. 



3 Geol. Surv. Ohio, Pt. I, p. 21. $ Ibid., pp. 37, 39. 6 Ibid., p. 39. 



7 Bull. Geol. Soc. America, Vol. II, p. 37. See also the section of Cuyahoga 

 Valley and Bedford, on p. 40, where it is stated that " This entire series [upper part 

 of the Waverly] is absent in the northern tier of counties to the base of Conglom- 

 erate I." 



