42 EOD, Chester— Gravels of Southern Delaware. 
Local details.—In the vicinity of Smyrna and from the west- 
ward to the State boundary, the Delaware Gravels become 
unusually coarse, attaining a thickness of from 30 to 35 feet. 
The bowlders, cobble-stones and pebbles are of both glassy 
with which were subangular fragments of coarse granite and 
cellular quartz similar to buhrstone. At Dover the same 
coarse gravels continue, and rise as moraines of considerable 
size. A fresh cutting within the limits of the town gave the 
following section :— 
1. A Diack sandy loam 2. 6 nbc cae psu 9” —6" 
@. A sendy DUCK CY csc duds 4 cision bok « 1°5’ 
3. A red sand compactly bedded........... 25’ 
* A. Dine clay——Lertiary oo ee ck ce 5 
and one piece exhibited to the writer a species of Leptena. 
Another slab showed markings which appeared to be indis- 
putable glacial scratches. At the Dover railway station, in a 
fresh cutting, the red sand showed beautiful examples of both 
oblique laminations and flow-and-plunge structure. Well 
rounded bowlders of both vitreous quartz and quartzite ure 
common, many of them weighing not Jess than 500 pounds. | 
Between Harrington and Milford, we are well within the region — 
of white sands, but adjacent to Milford the red sand is abund- 
antly interstratified with the white with which are also occa-_ 
sional seams of coarse pebbles, thus giving the deposit a highly 
gravely aspect. At Bridgeville, the interstratified seams 0 
red sand are equally well developed, but the usual surface 
deposit is a coarse gray sand which here attains a thickness of 
over twenty feet. At Seaford, a little farther south, the gray 
sands reach an equal thickness. At the railway station of the 
above place we got the following section :— : 
