11K) NEW YORK STATE MUSEUM 
Adirondacks. It is certain that these valleys contained important 
preglacial streams which flowed southward out of the mountains. 
Now, however, the Sacandaga river enters the north end of the 
Fic. 37. Sketch map of the southeastern Adirondack region, show- 
ing the relation of the preglacial drainage to that of the present. Preglacial 
courses shown only where essentially different from present streams. 
After W. J. Miller, Bul. Geol. Soc. Am., vol. 22 
