294 
The Ohio Naturalist. 
[V ol. VIII, No. 6, 
Point, the vegetation is almost entirely in its natural state, free 
from human interference, and some of the successions present a 
remarkably complete series of stages, whereas Cedar Point pre¬ 
sents, in many cases, a fragmentary series considerably disturbed 
by man’s activities. 
With this explanation the writer in this contribution may, 
perhaps, be pardoned for frequent comparative references to the 
vegetation of Presque Isle. Although often differing consider¬ 
ably as to particulars, Presque Isle and Cedar Point have much 
in common, both with reference to the general physiographic 
development of the peninsulas and to the ecological classification 
of their vegetation. 
The best method of treatment of the structure of the vegeta¬ 
tion of anv particular locality is, to be sure, more or less dependent 
upon the completeness of the successions. If the various stages 
of the successions are present it is most logical to use the develop¬ 
mental method, taking up the various stages in the order of their 
development and considering the vegetation as a gradual growth 
or evolution from the simple initial stages to the more complex 
stages tending towards stabilization. 
The vegetation of Cedar Point will be discussed in this paper 
according to the developmental method, as many of the succes- 
sional stages are exemplified, or at least indicated, in the present 
vegetation, while correlations with certain similar structures on 
Presque Isle will indicate the probable composition of certain 
missing stages. 
The following classification is here presented as a provisional 
outline of the vegetational structures on Cedar Point. Wherever 
the same structure has been recognized both here and on Pres¬ 
que Isle the same nomenclature has been adopted as was used 
in the author’s forthcoming work on the ecology of Presque Isle. 
A—The Cottonwood Bar-Ridge-Thicket-Forest Succession, 
a—The Populus-Salix Dune Formation, 
b—The Andropogon Dune Formation, 
c—The Toxicodendron Thicket Formation, 
d—The Pinus-Juniperus Forest Formation, 
e—The Quercus velntina-imbricaria Forest Formation, 
f—The Ulmus-Acer Forest Formation. v 
B—The Lagoon-Marsh-Wet Meadow-Thicket-Forest Succession, 
a—The Potamogeton Formation, and 
The Populus-Salix Formation, 
b—The Potamogeton Formation, and 
The Juncus-Eleocharis Formation, and 
The Populus-Salix Formation, 
c—The Potamogeton Formation, and 
The Typha-Scirpus Formation, and 
The Salix spp. Formation, and 
The Populus-Salix Formation. 
