92 W. Upham—Terminal Moraines of the N. American Ice-Sheet. 
feet high, and consists mainly of the dark clay, dipping about: 
0° ese 
and stratified sand, five feet, to the beach. The highest ee 
eet, 
and consists of gravel, sand and dark clay, irregularly bedded 
and inclined often 5° to 15° in different directions, with peb- 
bles up to one foot occurring at many places in the clayey strata. 
This part of Clay Head seems to be wholly of glacial origin; 
but earlier beds, among which are some of white clay, with 
clay in small amount, form the base of the bank a third of a 
mile to the south. 
Lignite is found abundantly for a quarter of a mile south 
from the breakwater in the lower part of the bank, twenty to 
thirty-five feet high, which forms the shore. It occurs, as at 
Gay Head and on Long Island, in fragments, which here vary 
from an inch to a foot in length, preserving the distinct grain 
of the wood and closely resembling charcoal; and also in lay- 
ers, which are here from three inches to two feet thick, gener- 
ally friable and earthy, and sometimes much like peat. These 
fragments and layers are found both in dark clay and in white 
sand; the same beds also enclose layers of gravel and thin 
seams of white and red clay. These beds are in some places 
folded and contorted, but mainly lie in anticlinals of gentle 
slope, capped by stratified gravel and sand with enclosed bow]l- 
ders. The surface of this island is partly of the same modified 
drift and partly till, both plentifully strown with bowlders up 
to ten and rarely twenty feet or more in diameter. 
[To be continued.] 
