300 



Annals of the Carnegie Museum, 



would thus be about one hundred and eighty-five years, and would be 

 thus correlated with Ridge No. 5 at Cedar Point. 



The ridge formed at this time may have been the basis for the 

 present dividing strip between Yellow Bass and Ridge Ponds, although 

 sand did not accumulate sufficiently to form a high ridge. There are 

 white pines here indicating a considerably greater age for this strip 

 than is indicated by the vegetation on the narrowing part of the ridge 

 immediately to the north of Yellow Bass Pond. 



HereJbesanc/ ,• 



EMIE 



FROM TRACING OF SKETCH OF PRESQ^ILE 

 HARBOR MADE BY J. 3 BROWN, i837 



B>' COURrtsr OF the u.s w«r dept. 



Fig. 3. Presque Isle, 1837. 



According to the above considerations the younger portion, at least, 

 of Long Ridge is to be regarded as the counterpart of Ridge No. 6 

 on Cedar Point. In this connection, however, it may be noted that 

 the latter ridge consists of two more or less distinct components and it 

 may be possible that this ridge, like Long Ridge at Presque Isle, may 

 have been partially the product of storms during the period of high 

 water in 1838. 



Between Ridge and Cranberry Ponds there is a rather broken sand 

 ridge showing some recent dune-formation towards its eastern end. 

 The vegetation was evidently considerably disturbed during the build- 

 ing of the Board Walk, both by fire and ax, but towards the west 

 there is considerable white pine forest mixed with black cherry and 



