438 F. D. Chester—Stratijied Drift in Delaware. 
clay present was the element giving variety of color to the soils 
and was found coating and cementing the particles. 
To sum up the results of numerous observations upon the 
surface deposits we have the following general section : 
WS See ee ee eee 6”—18” 
enw UIAY 22.52 ee SO Se ee 6' —14' 
Red sand and water-worn pebbles, highly stratified. 4’ —12’ 
bles. It often happens that this stratification of the soil was 
no way appparent, but whenever the materials became coarse, 
such stratification was distinctly seen. fo 
The exact position of these forms in the classification of drift 
phenomena is uncertain, unless they be termed, after Hitchcock, 
Terrace-moraines. Their origin is still more uncertain, and the 
only probable explanation is some checking of the motion of 
the waters at certain points, whereby a greater amount of ma- 
terial was deposited in particular localities. 
