GLACIAL LAKE WARBEN. 



397 



Gordon gives the altitude a mile east of Amadore as 725 feet and at Charleston in the 

 northern part of Sanilac County as 750 feet. Two miles farther north, at the county line, Lane 

 makes it 750 feet. A mile east of Ruth the writer made it 748 feet, and 2 miles north of Ruth 

 Lane makes it 756 feet. All of these altitudes in northern Sanilac County and southeastern 

 Huron seem too low as compared with better measurements on the west side of the "thumb." 



A mile and a half north of Verona Mills the altitude of the upper Warren ridge is about 

 775 feet. Mr. Leverett found a point a mile or so farther northwest with altitude of 780 feet. 

 A mile and a half west of Bad Axe its altitude is about 765 feet. Lane makes it 754 feet a mile 

 west of Popple and 744 feet at Gagetown. At the water tower in Vassar the crest of the hooked 

 spit of the. Warren beach is 709 feet. Beyond this point the first satisfactory determination of 

 altitude was made near the head of the outlet 2 to 3 miles northwest of Chapin, where it is 675 

 to 6S0 feet. In the sandy region which stretches away to the north no good measurements are 

 available. 



In Bay County the beach has an altitude of about 761 feet near the southwest corner of 

 Gibson Township, 764 feet west of Bentley, 770 at the north edge of Gibson Township, and 



Submerged beaches 



Lake Erie. 540-550 '-t=l LakeNii 

 Low level during Kirkfield 

 stage of Lake Algonquin 



Figure 7. — Diagram of falling stages of lake waters at western end of Lake Erie basin. 



777 feet 3 miles northwest of Sterling. These altitudes are all by aneroid and show some slight 

 discrepancies. Farther northeast in Clayton, Mason, and Burleigh townships the altitude seems 

 to be generally between 775 and 785 feet, reaching nearly 800 feet a mile or two southeast of 

 Taft, near the edge of the Au Sable sand plain. 



ONTARIO. 



Spencer gives the following altitudes in Ontario, where he identifies this beach as a wave- 

 made feature: Forest, 720 feet; east of Park Hill, 73G feet; near Bayfield, 767 feet; Ripley, 813 

 feet; Whites station (south of London) 715 feet; near Waterford, 770 feet; and at Brantford, 

 805 feet. 



NEW YORK. 



In New York the Warren beach is 858 feet above sea level at Crittenden, and it was found 

 by Mr. Leverett to be 880 feet about a mile northeast of Indian Falls. Fairchild made many meas- 

 urements of the altitude of Whittlesey, Arkona, and Warren beaches (see PI. XVIII), but he 

 applies a different name to the Arkona beaches hi that State. Beaches corresponding to the 



