290 The American Geologist. May, 1900 
teristic of marginal moraines. North and northwest of Sandy 
lake, and within the city limits west of the river, the till is less 
brokenly hilly, has mostly longer and smoother slopes, and is 
in part only moderately undulating. In the tract including the 
sections noted on Western and Penn avenues, its undulations 
seldom exceed 15 or 20 feet for the altitude of their crests 
above the neighboring hollows, which often hold sloughs or 
lakelets. 
MORAINE OF THE RESERVOIR, SILVER LAKE. AND ST. ANTHONY PARK. 
The southward continuation of this eastern moraine of 
Minneapolis is shown by my map in the paper before noted on 
the modified drift of St. Paul, and it is traced farther in the 
text of that paper as passing in western Dakota county to 
Rosemount. Its development in Prospect Park, one to two 
miles southeast of the State University, and thence north 
through St. Anthony Park and past the west border of the Ag- 
ricultural College farm, to Silver lake and the city reservoir, is 
admirable, with far reaching views from its hilltops. Farther 
north it sinks beneath the flat or undulating modified drift of 
Anoka county. This moraine was accumulated on the east 
boundary of icefields which adjoined lake Hamline ; and it was 
contemporaneous with another typical morainic belt which ex- 
tends from south to north through the east part of St. Paul, 
amassed on the east side of the same glacial lake. Probably 
the high drift hills of Mounds View township, the most north- 
western of Ramsey county, a fe\v miles northeast of this reser- 
voir, were formed also at this time, being connected by looped 
morainic tracts wdth each of these belts on the opposite sides of 
lake Hamline; and it is to be added that the Mounds View 
hills, like those of the reservoir and Silver lake, consist chiefly 
of red till, more or less veneered by yellowish and gray till. 
MORAINES WEST OF MINNEAPOLIS. 
The westwardly retreating icefields of this area next amass- 
ed marginal hills in a south to north belt beginning west of 
Cedar lake and stretching north to Crystal lake and thence 
west and north through the western part of Crystal Lake tow'U- 
ship. The accumulation of the hills in this belt was by the 
peripheral ice currents, moving capriciously and w'ith many 
