The Geology of Cincinnati. 55 
first* seems to have accepted the name, he later** calls it a 
synonym for the Hudson River group. In 1879 a committee 
of ten of the Cincinnati Society of Natural History, with Mr. 
Miller as chairman, submitted to that body a report in which 
it was held that the strata in the river bank in the First Ward 
of Cincinnati (Fulton) and those in Taylor’s Creek, east of 
Newport, containing 77zarthrus becki are to be considered of 
Utica age; all strata above these indicate the Hudson River 
group of New York. 
This summary rejection of the name Cincinnati group did 
not have the indorsement of all the Cincinnati geologists ; 
Mr. U. P. Jamestf objected to thus summarily disposing of a 
valid and well-established name. As pointed out by Mr. 
Joseph F. James, some of the members of the committee 
continued to use the term ‘‘ Cincinnati group.”’ 
At a later date, 1888, Dr. Orton, {ft then State Geologist, pro- 
posed to discontinue the use of the term Cincinnati group. 
The three hundred feet of shale, disclosed by drilling at 
Findlay, Ohio, as overlying the Trenton, which he identified 
as the equivalent of the Utica shale of New York, led him to 
adopt the term Hudson River group for the shales overlying 
these three hundred feet of Utica shales. 
In an admirable review of the Hudson River question in 
the light of his own investigations, Mr. Charles D. Walcott$ 
favored retaining the term Hudson (dropping the “‘River’’) for 
the series of strata between the Trenton limestone and the 
superjacent Upper Silurian rocks, Hudson being made the 
name of the terrane to include the Hudson River shales and 
grits, Utica shales, Frankfort shales, Lorraine shale and sand- 
stone, Salmon River sandstone and shale, Cincinnati shale 
and limestone, Nashville shale, and Maquoketa shale. 
The question of the name may now be considered to have 
been practically quieted. Winchell and Ulrichl| in their cor- 
* Cincinnati Quar. Jour. Sci., I, 1874, pp. 63-4. 
** Jour. Cincinnati Soc. Nat. Hist., IV, 1881, p. 268. 
+ Ibid., I, 1879, pp. 193-4. 
++ The Paleontologist, No. 4, 1879, pp. 27, 28. 
{ Jour. Cincinnati Soc. Nat. Hist., XIV, 1891, p, 98. 
tt Geol. Surv. Ohio, VI, 1888, p. 9. 
2 Bull. Geol. Soc. America, I, 1890, pp. 335-356. 
|| Geol. Minnesota, III, Part II, 1897, p. ci. 
7 
