1921] DACHNOWSKI—PEAT DEPOSITS 67 
trate the general development which had come to the final stage 
possible under the limits of the particular field conditions of 
different countries. 
In a consideration OF =] 
of basined deposits or E | Carex calama- 
moors it should be a go Somes peat 
kept in mind that de- 
pressions with stand- 
eran eee i ee Le 
ing water originate in | peat (in part 
a great variety of peepee rh gprs nese aacpled taal 
ways (30). Of chief 
importance, however, Colloidal 
is the fact that the  5-® 
initial types of peat 
material are primarily oe ge ag iam oe Sogn 
water-laid. They are [=== === ae cerated 
mipely: confined toovs (sae Pet 
the lower or deeper 30 ES 
parts of the depres- © SHSSDSSS SSO STI 
sion, where planktonic 
organisms, together RE EEE sae 
with comminuted Pe ena ere gescieiarpeononge 
fragments and other —r 
plant remains from 
both land and aquatic 
vegetation, sink to the Clayey phase 
ottom. A complete 
filling of lake and Sandy phase 
pond basins does not 
Sand 
usually occur by the 
formati i 
t —e er 2.—Cross-section of soundings in “Cedar 
ypesof peat material. Lake” peat deposit near Fremont, Steuben County, 
The peat-land near Indiana 
Fremont, Indiana 
(fig. 2), represents a relatively rare deposit of peat. The level 
where the higher plant communities can gain a foothold or succeed 
one another depends upon the ability of the plants to form a 
