F. D. Chester—Gravels of Southern Delaware. 43. 
1. Red and white sand __-._--- See ae ae ee 5 
2 luariztio pebbles ooo. oye was 2” 4+ 
Ne a a ras REM Seabees pre iene ent meray nr Ser 4’ 
4, Irregular layer of pebbles—level of run... 3” 
Passing to the east of both Seaford and Bridgeville, and to: 
th 
the white sand and only differ from the latter in the large: 
quartz, brown conglomerate, a light granitic gneiss, a dark 
hornblendic gneiss, a coarse grained highly feldspathic granite, 
land which borders the bay shore. Its basis is an unpenetrated 
pinnae of blue or biack clay in which have sometimes been 
ound by those living in the vicinity nests of modern oyster 
from One to three miles. . 
Within the southern area, the marsh land is bordered for its- 
£ntire length by the lowland terrace, which presents the same 
Winding course, and rises to a height of from 10 to 15 feet. In 
Some localities, at points nearer the terrace, this bog land is 
