298 



Annals of the Carnegie Museum. 



A sketch of Presque Isle made by J. S. Brown, September 30, 1837, 

 shows, (Fig. 3) the eastern boundary of the peninsula to have been 

 situated at the present position of the eastern part of Long Ridge, in- 

 cluding the part running south towards the old U. S. Pier. A survey 

 made in 181 7 and 18 18 by Lieutenant H. W. Bayfield (Fig. 2) in- 

 dicated roughly a line of dunes around the northern and northeastern 



GULL POINT 



^1' FROM TRACING OF MAP MADE 



BY AND>?r ELLICOTT AUG^3,1?'90. 



BY COURTESY OF THE U.S.W/\R DEPT. 



Fig. I. Presque Isle, 1790. 



shores of the peninsula, the shore-line (approximately the present inner 

 border of Long Ridge) terminating in a small sand-spit which evidently 

 later developed into the low ridge between Yellow Bass Pond and 

 Niagara Pond. 



Low water prevailed in Lake Erie in 181 7 and 1818, but 1838 

 marked the climax of a period of very high water (575.11 feet above 

 sea-leveP^) the mean water level then being 41^ feet higher than in 

 1808.'^ The survey of 1837 marks the sand as accumulating all along 



15 " Appendix EEE. Ann. Report Chief of Engineers, U. S. War Dept. Survey of 

 Northern and Northwestern Lakes." 1905 : 2782. 



"'Nelson, S. B. /. c, 1896. Leaving out of account an annual oscillation of 

 about one foot in the mean water-level of Lake Erie, there have been periods of high 

 water-level in 1812-1813, 1838, and 1858 ; and periods of low water in 1808, 1818, 

 1834, and 1895. 



