[PENHALLOwW] DEVELOPMENT OF CERTAIN MARSH LANDS 45 
TRANSEAU, E. N. (10) On the Geographic Distribution and Ecological Rela- 
tions of the Bog Plant Societies of Northern North America. Bot. 
Gaz., XXXVI, 1903; pp. 401-420. 
WELD, LEwis H. (11) Botanical Survey of the Huron River Valley. II. 
A Peat Bog and Morainal Lake. Bot. Gaz. XXXVII, 1904; pp. 36-52. 
ILLUSTRATIONS. 
Figure 1—Map of Portsmouth Harbor and adjacent territory, showing the 
location of Brave-Boat Harbor in the north-east corner. The 
head of the marsh lies just beyond the edge of the sheet 
where the railroad, shown by a fine line, would intersect if 
projected. The electric road is shown nearer the coast by a 
heavy line. By following this road southward, the various 
features of the two marshes and of Chauncey Creek may be 
traced. To the south of Portsmouth Harbor various other 
marshes may be seen, some of which may have had an origin 
similar to the Brave-Boat Harbor marsh. 
Figure 2.—A general view of Brave-Boat Harbor marsh looking toward the 
head in the distance on the right. The surface shows the 
characteristic features presented by the two species of marsh 
grass; the shores show the characteristic forest growth and 
the water courses are seen to be shallow and empty at low 
tide. 
Figure 3—A view looking southward and showing Oak Island, with a por- 
tion of the eastern trench in the foreground. 
Figure 4.—A view looking north from Oak Island, showing the trench on the 
the western side of the track. 
Figure 5.—A nearer view of the western trench showing the distribution of 
the remains of trees. 
Figure 6.—A prostrate tree of white pine. 
Figure 7.—The stump in the foreground shows remarkably well preserve@ 
roots but a much worn top. A section taken from the nearer 
root showed the stump to be of white pine. 
Figure 8.—An ideal section showing the general structure of the marsh from 
the time of the sphagnum zone until the present day, with 
marsh grass on the surface. 
