288 The American Geologist. May, 1900 
Another quarter of a mile forward, a cut was noted on the 
east side of Penn avenue, between Sixteenth and Seventeenth 
avenues north, as in section 7. Its length was 250 feet, with a 
height of 15 feet. Yellow till, 3 to 6 feet thick, forms the sur- 
face and lies on a very thin, but continuous layer of red till, i 
to iVi feet thick, which curves in parallelism with the smooth- 
ly rounded surface. Under this layer is a similar layer of yel- 
low till, also a foot thick, or slightly more; and this, at its 
gracefully curved lower limit, is underlain by red till, which 
forms all the lower nucleal part of the cut, seen to the thick- 
ness of 8 feet and continuing below. The tenuity, distinct- 
ness, and persistence of these bands of till of diverse origin are 
very noteworthy. They seem explainable by wavering of con- 
fluent ice currents, the drift having been englacial, like the 
somewhat similar but much disturbed deposits of sections i, 
2 and 4. 
Between 300 and 600 feet north of the last, a second cut 
(section 8, plate VI I), on the east side of this avenue, near 
Eighteenth avenue north, showed in part nearly the same thin 
interbanding of red and yellow till, the thickness of each of the 
attenuated layers varying from i to 2 feet. There is less su- 
perficial yellow till than in section 7; it is bounded beneath, as 
in that section, by a line nearly parallel with the rounded sur- 
face; and the main lower mass of the excavation consists 
wholly of red till. 
About a half mile thence north, a cutting between Twenty- 
sixth and Twenty-seventh avenues, 6 to 8 feet deep, is all yel- 
lowish gray till. 
Southzvest of Crystal lake. A mile and a half northwest 
from the last, on the Great Northern railway two-thirds of a 
mile southeast of Robbinsdale station and about half as far 
from Crystal lake, a cutting of till 600 feet long and about 15 
feet deep is chiefly yellow or gray till, as shown in section 9, 
plate VII, with a nucleal deposit of red till, 12 feet thick and 
continuing lower. 
On the New Brighton road. The marginal moraine belt 
east of Minneapolis, lying partly in this city and partly in St. 
Paul, presents very interesting sections of complex glacial 
and modified drift deposits, the red drift being commonly over- 
lain thinly b)- the yellowish gray drift. One of the more simple 
