1 66 Bulletin of Laboratories of Denison University. [Voi.xi. 
Rising as a small stream, winding its course over a broad 
alluvial deposit, Jonathan creek flows in a southeasternly direc- 
tion past Glenford in Hopewell township of Perry county, 
through Madison towmship, into Newton township |of Mus- 
kingum county. Eight miles below Zanesville it unites with its 
south branch to form the Moxahala river. The river formed at, 
this point flows north for a distance of about 3 miles when it 
turns to the right through a rock gorge and empties into the 
Muskingum river. 
The valley at Thornport is quite broad and filled up with 
silted material. Here the valley is 2 miles wide, and is 
bounded by gentle sloping hills rising to the height of 150 feet 
to 200 feet above the alluvial flood plain. 
A view from the north side of the valley just to the east 
of Thornport, looking toward the west, shows the broad drift 
plain on which the Licking reservoir is situated extending many 
miles to the west. A view to the east from the same point 
shows the valley extending eastward and occupied by Jonathan 
creek. A broad valley, deeply filled with drift, its surface 
strewn with cat-swamps and bounded by sloping rock-walls so 
characteristic of the old preglacial valleys of the state. 
Proceeding eastward the valley gradually narrows. The 
rock-walls preserve their sloping character and the creek con- 
tinues to flow in a shallow trough cut through the silted deposit. 
At Glenford the valley has become quite narrow and i mile 
east of that place the valley is only ^ mile wide. Here is 
found the last of the glacial till within the valley. Just south 
of the town a hill with rock nucleus and capped with glacial till 
rises to the height of 1 10 feet above the flood plain of the creek. 
This accumulation extends off toward the northeast forming 
what at first sight seems to be another distinct glacial deposit, 
but which in reality proves to be a continuation of the same 
deposit, cut through and worn down by the small but erosive 
stream. 
Numerous drift deposits occur at various levels along the 
valley from Thornport to Glenford, but to the east of Glenford 
none were observed in the immediate valley above the terrace 
