Proc. Roch Acad. Science. 



Vol. .-,, Pl. V. 





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[LAKE IROQUOIS] 



Map B. A stage in the lowering waters (sub-Dawson) when they reached 

 approximately the level assumed later by final, full-height Iroquois. Lake 

 Iroquois was actually initiated 70 feet lower (see page 150). This map 

 is for comparison with the next and the preceding. The eskcr-river 

 builds still another "fan". Small icebergs float in the lake. 



I 



