92 The A))icrican Geologist. February, isos 
of the distribution of boulders. In view of these and other 
facts the moraines in north central Minnesota are "referred to 
two great lobes of the ancient ice sheet, a shorter one moving 
southwest through the lake Superior basin and a longer one 
moving around this from the northeast to the west and south- 
west. In their recession, these lobes formed successive slen- 
der and more or less curved reeentrant angles producing in- 
terlobate moraines, one arm of each being formed on the west 
side of the lake Superior lobe, and the other arm along the 
east side of the Red River lobe. The apex of this angle 
advanced toward the northeast until it grew into a slender 
moraine probably traceable along the Mesabi Range." 
Professor Todd's objections against the previous arrange- 
ment of these moraines seem well founded. The lobate char- 
acter of the ice sheet during its last stage of existence in 
northeastern Mimtesota is evident. 
The accompanying map (plate XI ) showing the glacial 
geology of northeastern Minnesota is intended to emphasize 
the relation of the moraines. For the region Avest of Range 
II, west of the 4th principal meridian the map and descrip- 
tion accompanying it are taken from Mr. Upham's report 
already cited. For the region east of range 12, the descrip- 
tions are based almost entirely upon the writer's observations. 
The morainic belts represented upon the map, approxi- 
mately outline the very rough drift accumulations character- 
ized by numerous kettle holes. Since the moraine immedi- 
ately north of lake Superior does not appear to be a continua- 
tion of the original Leaf Hills moraine, although probably 
contemporaneous with it, the name Highland moraine will 
l)e used in order to prevent confusion until its western and 
southern connections have been determined. The correlation 
by Mr. Upham of the other moraines is satisfactory so far as 
the writer is able to determine. 
HigJiland Moraine. This moraine is named from High- 
land station on the Duluth and Iron Range railroad, ten 
miles northwest of Two Harbors on lake Superior, and 1107 
feet above the lake. The railwa)' station, located in a deep re- 
cession in the south side of the moraine, is surrc:>unded on all 
sides by high drift hills. The railroad crosses the summit 
of the moraine a mile north of the station at an altitude of 
