804 The American Geologist. December, 1895 
Triiut}' sandstoiu', as if the writer were the original and only 
advocate of such a view; and in the article in the September 
number of the same journal he seems to have ditticulty (page 
220) in understanding how the writer could have made such 
an error as to think of the Cheyenne as being related to the 
'J'rinity sands, or the Kiowa shales as being related to the 
Fredericksburg. Here Prof. Hill fails to give himself due 
credit. 
In Bulletin No. 9 of the Washburn College Laboratory of 
Natural History (published in February, 1889), the writer 
gave a preliminary description of the Belvidere section, 
including as part of the same the Belvidere beds, which he 
there indicated were related to the Comanche series, without 
attempting to correlate them more precisely. On page 115 of 
volume 2 of the 1888 Report of the Arkansas Geological Survey, 
Prof. Hill referred to that section and alluded to No. 5 of it 
as representing the Fredericksburg division ; and it was there 
that he was the first to announce that No. 6 (the (-heyenne 
sandstone) of that section probably represented the Trinity 
beds. 
In later articles the writer followed Prof. Hill in this 
opinion that the Chej^enne should be referred to the Trinity 
beds, a view that neither the latter nor the former ever pub- 
licly retracted until after the study of the tlora of the 
Cheyenne sandstone b}" Mr. Knowlton.* But for two or 
three years past the writer had considered this view as 
increasingly doubtful and had been inclined to correlate the 
Cheyenne santlstone with the Paluxy, the terrane immediately 
underlying the Fredericksburg. 
It need not be a matter of surprise if the Paluxy sands 
should yet yield dicotyledonous remains, since the existence 
of dicotyledons in Paluxy time cannot be doubted. Prof. 
Fontaine has described a considerable dicotyledonous tlora 
which flourished on the Atlantic seaboard in an epoch that 
seems to have l:)een later than earliest Potomac, or than the 
related early Glen Rose, and which may have been nearly sj^n- 
chronous with the Paluxy. 
*In 1891 again, in discussing the sands which he placed below the 
Glen Rose and called the Trinity sands. Prof. Hill wrote, " In southern 
Kansas the Cheyenne sandstones have been properly ascribed to this 
age by Cragin.'" (Bui. Geol. Soc. Am., vol. 2, page .506.) 
