226 Out1o STATE ACADEMY OF SCIENCE 
Ridge 6 resembles ridge 7 in breadth, height, and vegetation 
but the trees are larger. Its southern portion is single but 
toward the north are two ridges of about the same age which I 
have designated 6 (1) and 6 (2), the former being the highest of 
all the ridges, in one place nineteen feet. These will be included 
in any reference to Ridge 6. Here too cottonwoods predominate 
over all else. One locust (Robinia pseudacacia) is 37 inches in 
circumference and about 62 feet tall. White ash is perhaps ten 
times as numerous as on Ridge 7, the tallest about 18 feet, but 
most of them less than 12 feet. There are several cedars 10 feet 
or less in height and a very few trees of other kinds. Most of 
the cottonwoods are not much more than a foot in diameter but 
two were found 55 inches in circumference One of these near 
the big locust was cut and found to have been 64 feet tall and to 
have 41 or 42 rings about 3 feet above the roots, indicating an 
age of about 44 years. This Ridge was doubtless formed at the 
time of the high water 1858-62, probably by the same storms 
that swept the trees from the bar and moved the bar over onto 
the marsh. The oldest trees on the bar appear to be of about 
the same age as those on Ridge 6. In the valley between 6 (1) 
and 6 (2) we found clam shells, decayed driftwood and peat such 
as one finds on the present shore. A few inches below the surface 
in a thin layer of organic particles such as one finds at the margin 
of littoral pools we found pieces of coal and cinders. As late as 
1866 steamers entering Sandusky Bay with coal smoke issuing 
from their funnels attracted some attention, for most of the 
steamers burned wood. This shows that Ridge 6 (2) which 
must. have been formed after the coal and cinders had been 
washed ashore is not much older than 1859. Ridge 6 (1) may 
have started in 1857 or 1858 and have been completed in 1859 
while Ridge 6 (2) may have been built by the great storms of 
1861 and 1862. This part of Cedar Point was surveyed for the 
War Department by Lieutenant Colonel Graham in 1862. The 
shore line shown on his chart is farther northeast than it was in 
1849 when the last survey previous to 1862 was made. In a 
map illustrating a report on Sandusky Harbor by Colonel T. J. 
Cram, U.S. Engineer, 1864, taken partly from Graham’s survey 
in 1862 the northeast shore of what I have called the dune section 
of Cedar Point is marked “wearing away.’’ Doubtless much of 
the sand removed from that section was built into these ridges. 
Besides, sand derived from dunes lately demolished on the other 
side of the channel after being swept into and out of the bay must 
have found a resting place here. 
Before proceeding to consider the age of the older ridges it 
may be well to draw some further inferences regarding these that. 
