398 
Frank Carney 
No. 7. This esker has its origin on the steep slope south and 
east of Como. Its vertical range is little more than 100 feet, but 
its length is scarcely one-eighth of a mile; the esker attains a 
stout development even in this short distance. Kame deposits 
are plentiful about the slopes of the hill to the north, and the 
esker material too consists largely of 'washed deposits. From the 
height of the esker and the slopes of its flanks it seems natural 
that formerly it had a greater linear extent. Just north of this 
location are accumulations which reach across the valley; the ice 
fronted along the line of these kames, and the drainage tended to 
work over the drift deposits immediately southward in the valley. 
Therefore the wide area of washed drift which now extends south- 
ward in the line of this esker has probably obscured, and degraded 
portions of the ridge. A couple of isolated hills of drift near the 
middle of the valley, it was noted, are in line with this esker and 
add to the pertinency of the suggestion. 
No. 8. Of the eskers studied on the sheet this had attained the 
greatest development. The termini of the segments which it is 
thought represent the original esker give it a distance of approxi- 
mately five miles. In several places the ridge is completely want- 
ing, one gap at least being normal; this is where post-glacial drain- 
age has cut the ridge. 
Faint suggestions of subglacial stream deposits are noted at 
and slightly above the i6oo-foot contour a little northeast of North 
Summer Hill; a plexus of drift knolls containing a large percentage 
of washed material exists in this same locality. I am not satisfied 
that there is any genetic association, however, between this accu- 
mulation and the esker. The fact that a gap several rods long 
occurs immediately to the southwest is the most serious objection 
to any such association. Where the map next indicates a develop- 
ment of the esker, the ridge is clear and in all respects normal. 
Then follows a short break, but with enough localizing of drift 
to warrant making the ridge continuous. From this point on, 
however, to the last interruption at about the i6oo-foot contour 
southwest, the ridge is strongly and normally developed. 
Continuing southwest from the gap in the esker occasioned by 
the intersection of Dry Run, we find about the 1480-foot contour 
the same marked development of the winding ridge. After cross- 
ing the next highway the esker locally expands into a kame cluster; 
narrowing down again it continues to the top of the grade where 
