286 
Frank Carney 
the light of the thousands of dollars spent by this company in the 
last year, much of which has been sunk in the slumping quick sands i 
of this old delta, needs no further comment. 
A vital question today in every large American city is speedy j 
transportation for the urban part of its citizens. This fact has I 
led to the construction, in many large centers of population, of 
subways. For the most part subways in the city of Cleveland 
would have to be cut through this old delta. Such an under- 
taking will doubtless present new questions to subway engineers. 
This particular part of the southern shore of Lake Erie, if one 
can clearly interpret the present movement of industry, is destined 
to be the most thickly populated portion of Ohio. The lake plain 
here, so far as the city of Cleveland is concerned, even now is too j 
narrow. It is probable that in this assured development many |j 
physiographic reactions, new to this region, will arise. This j 
whole composite of conditions, then, is the result of a pre-glacial ii 
physiography upon which has been imposed the work of three i 
lake levels, and which is becoming still further complicated by < 
the shore line now in the making, 
BIBLIOGRAPHY 
Gilbert, G. K. 
“Surface Geology of the Maumee Valley,” Geol. Surv. Ohio, vol. i (1873), 
PP- 537-56. 
Heckewelder, John 
Map of Northeastern Ohio, Western Reserve Historical Society, Tract 64 
(1884). 
Leverett, Frank 
“Correlation of Moraines vSith Beaches on the Border of Lake Erie,” The 
American Geologist, vol. xxi (1898), pp. 195-99. Monograph, x\\ (1902), 
U. S. Geol. Surv., “Cleveland Moraine” pp. 619-51; “The Glacial Lake 
Maumee,” pp. 732-35; “The Glacial Lake Whittlesey,” pp. 752-55; 
“The Glacial Lake Warren,” pp. 763-64. 
Lyell, Charles 
Travels in North America, vol. ii (1845, New York), pp. 71 - 74 - 
Newberry, J. S. 
“Report on Geology of Cuyahoga County,” GeoL Surv. Ohio, vol. i (1873), 
pp. 171-200. 
“Terraces and Beaches,” Geol. Surv. Ohio, vol. ii (1874), pp, 50-65. 
“Lake Ridges,” Geol. Surv. Ohio, vol. iii (1878), pp. 44-45- 
Pierce, S. J. 
“The Preglacial Cuyahoga Valley,” The American Geologist, vol. xx (1897), 
pp. 176-81. 
