286 The A?nerica?i Geologist. November, i899 
2. Distinctly stratified gravel and coarse sand 2 ft. 
3. Bed of boulders, cobble and coarse gravel. Drift varie- 
ties of all kinds, including Little Falls slate. Forms 
talus slope of modified drift, indicating thickness of . . . 4 " 
4. Black slate, cleavage planes nearly vertical; uneven 
surface; exposed along the water's edge to thickness 
of between 1-2 " 
In No. 2 there are many pieces of black slate from this 
Little Falls outcrop, and they are so much decayed as .to easily 
crumble in the fingers. Rounded pebbles of white quartz oc- 
cur in this stratum, but no angular quartz fragments. In No. 
I no quartz was observed except one piece of sharply angular 
white flint which was found on the lower side of a projection 
of the loam^ about two feet below the surface. As the stratifi- 
cation disappears below this level, I cannot say that this quartz 
was not introduced through the decay of the roots of trees. 
There were a few small pebbles in the same stratum. Close 
to the dam and, therefore, almost at the very foot of the slope 
at whose summit the abundantly distributed flakes are found, 
the section which the river bank makes through the Modern 
flood-plain, shows in the soil layer small, very sparsely scat- 
tered quartz fragments. Walking about on the lower terrace 
and examining vacant lots and the streets, very few pebbles 
are observed, but upon ascending to the higher plain, twelve 
feet above the Modern flood-plain, the surface portion always 
contains a few quartz fragments, even 600 feet back from the 
river. About 100 yards east from the east end of the dam, 
in going from the higher sandy plain with many quartz frag- 
ments to the lower plain with few quartz fragments, the con- 
trast is strong, and seems to suggest that the quartz distri- 
bution on the Glacial terrace preceded the formation of the 
lower plain, and also that but little quartz was worked by In- 
dians in this locality since the formation of the modern flood- 
plain. The time at my disposal was insufficient to determine 
this question with absolute certainty, and it deserves further 
investigation. I shall have more evidence on the subject to 
present in discussing other localities. 
Proceeding southward on the west side of the river, angu- 
lar quartz fragments were observed as follows : (a) A small 
bunch or ''pocket" of sharply angular white quartz in the sur- 
face soil of the Modern flood-plain, ten feet above the river, 
at a point about one-half mile below the paper mill. 
