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BLANCHARD OK DEFIANCE MORAINE. 



583 



face, the descent being barely perceptible to the eye, but its outer face 

 has a more rapid descent. On portions of the inner slope the lake waves 

 have cut benches or accumulated gravelly ridges which interrupt and modify 

 the original smoothness of the slope. The outer border has definite relief 

 throughout the curve in western Ohio and as far east as Lodi, beyond 

 which it is so closely combined with the St. Marys moraine as to be difficult 

 of separation. The weak inner member developed between Richfield and 

 Rochester has a relief of but 10 to 20 feet, but as it is usually only one-half 

 mile or so in width it is very distinct. 



RANGE IN ALTITUDE. 



The altitude of the crest of this moraine in the part traced by Gilbert 

 west from Findlay declines from about 850 feet on the meridian of Findlay 

 to less than 750 feet at the bluffs of the Maumee, but rises north from the 

 Maumee to a height of nearly 850 feet near Adrian, Mich. The altitudes 

 along the portion east from Findla}' are set forth in the accompanying table 



Altitudes along the Defiomce 'moraine 'between Medina and Findlay, Ohic. 



TOPOGRAPHY. 



In its surface contours the Defiance moraine presents more variation 

 than any of the minor moraines already discussed. The portion which was 

 deposited above the level of Lake Maumee, and which may be designated 



