566 The Theory of a Glacial Dam at Cincinnati, ete. (June, 
are Decker, Dunkard, Whitely, Muddy and Ten Mile creeks, 
and in each case the deposits disappear at the same absolute level 
at which they cease along the river.” 
Professor Lesley informs us also that the terraces along the 
Allegheny and its tributaries, preserve this same absolute level. 
Coming down to the Great Kanawha river, another branch of 
the Ohio, which drains an unglaciated region, Professor White 
finds water-worn boulder deposits disappearing at an elevation of 
from two hundred to three hundred feet above the present level 
of the stream. About fifteen miles below Charleston, West Va, 
there is a deserted river channel followed by the Chesapeake and 
Ohio railroad, which extends through Putnam and Cabell counties 
to the mouth of the Guyandotte, at Huntington. This deserted 
valley is from one to two miles wide, is two hundred or more feet 
above the Kanawha, and “is filled to a great depth with rounded 
boulders of sandstone, chert, cannel coal and other trash, w 
has plainly been transported down the Kanawha from above 
Charleston, so that it was clearly seen that the water of the Kas 
wha had once found an outlet to the Ohio by way of this valley, 
a distance of fifty miles. re 
During the summer of 1883, I explored a similar dese 
channel a little ways further down the river, in Greenup ene 
y. This valley extends from near the mouth of the Big rae 
to Greenupsburg, a distance of about twenty miles, and eae | 
one to two miles wide, is 220 feet above the present ie 
mark of the river, running parallel with it and about Sa o 
: s a valley% — 
distant. This, like all the valleys in this region, ! apie | 
erosion, the hills rising on either side from two hundre | 
th rounded 
hundred feet, and the bottom of it is covered wi i ; 
bles of quartz and quartzite, from an inch to two feet oad Squiet 
Coming to the Licking river, in Kentucky, Mr. G. sat ii 
informs me that near Owingsville, Bath county, = et is at 
tween Slate creek and the East Fork of Licking, including — 
extensive low tableland which is covered by pep? whid 
numerous water-worn fragments of sandstone and C0à' 
must have been brought down from the coal fie 
more to the north-east, and could not have been ! . 
as they are over this immediate tableland and a see still war 
yenty miles% 
lds tW rosti 
ing it, except there had been an extensive greece produce! 
occupying the area. This is just what would have 
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