1884.] ` Vestiges of Glacial Man in Minnesota. 597 
the northwest, but without impinging directly upon that from 
the direction of Lake Superior in the latitude of Little Falls, 
where the two are separated by an interval of several miles. As 
we are assured, however, by Mr. Warren Upham, the two finally 
come together in Stearns county, some little distance south of 
Morrison county. Geologically considered, then, the field of 
study lies in an anvient terrace-plain east of the Mississippi river, 
is situated precisely between the northeast and northwest mo- 
raines, and is, so far as the quartz stratum to be described is con- 
cerned, buried under an accumulation of modified drift deposited 
by glacial waters. 
While occupied in examining the river bank in quest of 
Wrought quartzes, one day during the season of 1879, I had 
occasion to ascend a slope lying between the new flood-plain and 
the older one, by a pathway leading through a sort of gap, or 
notch, in the latter. Henceforth I shall, for the purpose of more 
emphatic distinction, denominate the lower and higher levels un- 
der consideration as Jottom-land and terrace-plain, respectively. It 
seemed that at some past period a cut had been effected here by 
drainage, and that the washout thus formed had afterward been 
deepened through being used a8 a wagon-track. In this notch I 
discovered the soil to be thickly strewn with pieces of sharp, 
paque quartz. These were commonly of a white color, and 
ranged in size from minute fragments to bits as large as a man’s. 
d, and in some instances even larger. 
There were many hundreds of these chips visible, scattered! 
ee area of the width of the wagon-track, and ten to fifteen 
Aah length. They were conspicuously unwaterworn and like- 
Wea in the main, unweathered, though occasionally a bit was. 
Picked up having some one of its surfaces weathered, while frac- 
| ao. Wrought faces appearing upon other parts of it, looked! 
: as if the work of yesterday. On the other hand, the 
Mass of stone rubbish upon and among which the quartzes were 
» 8 much waterworn, many of the pieces being well 
mh while none of them are wholly angular. 
Henni of these quartz pieces had, when first observed, a sort of 
eis exterior unlike that of the rusty-looking specimens sub- 
ently exhumed from the stratum adjacent ; but this was no 
a” t due to the complete superficial cleansing to which they had 
: Subjected by recent exposure to the elements. At all events, 
