page_0003

it this summer had a rapid currant, it
had a muddy bottom - or at least one not strong
was full of grass and in places widened
out into little lakes where the currant
was imperceptable - I doubt ^myself whether this shell
could exist in rivers with rapid currents
rocky bottoms.

Lymnea fragilis inhabits the prairie [page torn]
in very great numbers, I found none in
the river to day and I am under the impr[page torn]
that I never did find any in it.

Physa heterostropha is exceedingly abundan[page torn]
in the prairie sloughs, I do not remember
having found it abundant - if at all - in the river
I have sometimes found great quantities of this
species on the beach about the piers in lake
Michigan at Chicago.

I did not find univ cariosus nor u.
calceolus as common as usual, in the river to
day. u. cariosus is abundant in some small
lakes (Crystal Lake &c ^{Crystal lake Illinois - not Crystal Lake in Wisconsin, from when)} near here whose only [illegible]
I also have this shell
is in high water when they run ^empty into [page torn]
I mention these species because I do not see them[page torn]
in catalogues of Illinois shells.

[circled] 8