f. D. Chester—Stratified Drift in Delaware. 48% 
Slopes are scarred by broad shallow gouges. To describe all 
the details of form in this irregular but picturesque region 
id suffi 
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ess 
Baie of them, those containing an excess of black mica, resist 
Waters than through direct atmospheric contact, hence no 
But that this erosion was not entirely aerial in character is 
evident. The creeks of the region wind for miles through 
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mine clearly their gneissic origin. Quartz grains, finely rounded, 
hornblende particles, round ut with less smooth surfaces, 
particles of white mica and rarely grains of magnetite. The 
