The Abandoned shore Lines of Green Bay. — Taylor, 317 
continuity, or unless it has some marked peculiarity which 
makes its identity from place to place a matter of safe infer- 
ence. But the highest shore line need not be continuously 
traced. For, if its identity is thoroughly established in each 
separate locality, its extension by inference between those 
localities is safe enough, provided the distance be not too great. 
With lower lines there is much more liability of error, for they 
are not always continuous even where locally strong. In the 
present state of investigation in this country, and especially 
in the rough and wooded regions of the north, continuous 
tracing for long distances cannot be expected. The best work 
that can be done must necessarily 
be fragmentary and of the nature 
of a reconnaissance. In the accom- 
panying sketch map the present 
shore line is represented by a dotted 
line, except from Two Rivers south- 
ward, where it is a continuous line. 
The heavy lines represent the high- 
est shore line at places observed. 
and the light broken line its proba- 
ble extension. 
Sheboygan and Manitowoc. At 
these two places, which were the 
first ones visited, the evidence 
found was entirely of a negative 
sort. We drove north and south 
along the shore from each place 
and over some of the higher ground 
hack from the lake. The shore at 
both places is a great fresh bluff of 
glacial drift, composed mainly of 
}:ellow clay witli some intercalated 
layers of sand, hut with very little 
coarser material. In some places 
the bluff rises steeply from the lake 
for 1)0 feet or more. That the lake 
is cutting it hack at t he presenl 
time is quite plainly shown by the 
freshness of the face of t he hi nil' 
Fig. l. Ma}) of Green Bay. Scale, 
about 40 miles to an inch. 
