408 The American Geologist. June, isos 
on a precipice of volcanic rock. Two miles east is another but 
smaller moraine transverse to the main vallej', and there are several 
small ones at various points above. The great depth of ice here 
makes it certain that the glacier at its maximum development ex- 
tended far down the valley be3'ond the limits described. These 
terminal moraines are therefore retreatal. 
3. Crag and Tail. The high granite ridge extending north- 
eastward from the Falls of Napius creek shows no erratics that I 
could find, until we reach a point about three-fourths of a mile 
from the stream. Here on the top of a broader part of the ridge 
is a moraine of intensely glaciated matter forming a sheet a few 
feet thick, nearly an eighth of a mile long, and 200 or 300 feet wide 
at its widest place. It was formed in the lee of a small peak of 
volcanic rock that rises abruptly about 30 feet above the rest of 
the ridge. A narrow moraine borders the stoss side of this little 
peak and a few erratics are also found on the other two sides. 
Perhaps a better name for this arrangement would be Crag and 
Collar. This is at an elevation of about 500 feet above the con- 
tiguous portion of the main valle}'. 
4. Crag and Cap. Three miles east of the last named locality 
and one mile south of the main creek is a hill rising 800 feet above 
the river. It is capped by a moraine forming a ridge about 50 
feet thick, 250 feet wide at base, and about an eighth of a 
mile in length. The moraine consists largely- of quartzite and 
granite, man}' of the granite boulders being ten and even twenty 
feet in diameter. The local rocks are schists. For a fourth of a 
mile on the lower slopes of the hill I could find no erratics, except 
on one steep slope where a few ma}' have slipped down the hill. 
The longer dimension of the ridge is parallel with the main valley, 
presumably the direction of glacial fiow at this point. In several 
other places there are moraines capping the hills. 
Large ai'eas between these high moraines show little or no mo- 
rainal matter. In other words, we find local deposits, not a sheet 
of till such as covers New England. The third and fourth varieties 
of moraines here described, designated as " crag and tail " and 
" crag and cap, " were probably deposited under the same condi- 
tions as those that are now being formed on the sides and tops of 
nunataks of the Greenland ice-sheet. The hills bearing these pe- 
culiar moraine accumulations rose nearly to the surface of the ice 
or a little above it. Part of their moraine stuflf is intensely gla- 
