TEE DEVONIAN LIMESTONE AT ST. GEORGE, QUEBEC 225 



by the Onondaga sea, for as Miller states^ "in the succeeding 

 Middle and Upper Devonian submergence, sediments were laid 

 down unobstructedly and with great horizontality across the Arch," 

 though this conclusion has been questioned. 



The shore line in western United States is copied from 

 Schuchert's map. There is some doubt as to the Onondaga age 

 of the outcrops on which this shore Hne is based, and there seems to 

 be no good reason for placing the Onondaga shore line so far west 

 of the present strand, but those are subjects with which this paper 

 is not primarily concerned. 



^ A. M. Miller, "The Geology of Kentucky," Department of Geology and Forestry 

 of the State of Kentucky, Bull. 2 (1919), fifth series, p. 77. 



