1884.] Vestiges of Glacial Man in Minnesota. 601 
- directly involved in the terrace surfaces. Had they once been 
thus inhumed, the superficial stratum of adjacent drift would 
assuredly have been found to contain a greater or less proportion 
of similar fragments, scattered throughout its substance. But 
this was not the case. On the contrary, no buried quartzes what- 
ever appeared in the superior exposures of the notch, nor within 
the horizontal surfaces at either hand, though such were sought 
with careful scrutiny. Since November, 1879, at which time the 
Studies here recorded were in active progress, the wagon-track 
hitherto mentioned in this paper has been converted to public use 
asa highway, and has been repeatedly graded in consequence. 
As might be conjectured, the ground has been much dug over, the 
stratum being, at present, almost broken up and destroyed, if not 
wholly so. During three successive seasons, the road has been ina 
State of almost constant repair, owing to its being continually used 
for the heavy work of dragging logs from the bottom-land to the 
top of the terrace-plain. From this and other disturbing causes, 
hot necessary here to specialize, the topography of the spot has 
been materially modified of late, while quartzes from the bed of 
the notch, as likewise from the stratum at first discovered, have 
been much mixed up with the surrounding soil. Primarily, how- 
“ver, as I permit myself to reiterate in the way of emphasis, I 
could not, with a great deal of painstaking, find any superficially 
inhumed quartz fragments at the point of observation ; although, 
a shown by Professor Winchell, and as I have myself had abun- 
Occasion to observe, such quartzes occur in the surface strat- 
niga of the terrace-plain at various isolated localities in the vicin- 
ity. So far as I have been able to judge, these appear in groups 
which are surrounded by considerable areas containing no ob- 
*trvable remains. The absence of chips above a plane a foot or 
two superior to that of their bed at the bottom of the notch was, 
Course, a marked circumstance, since they should have oc- 
ered plentifully in the superficial stratum, had the notch chips 
‘ ray as assumed, of the same age with Professor Winchell’s 
Ultimately it was ascertained that the notch quartzes had 
‘Ped to the level at which they were first seen, from a thin 
ZST of them, once lying from ten inches to two feet above, and 
je equent] y broken up through the eating out of the sand un- 
: by drainage, supplemented by the action of wagon- 
