LIST OF ILLVSTRATIOXS. xxi 



PAGE 



Map showing the glacial geology of the United States and southern 



Canada between 134 and 135 



Map showing the preglacial drainage of the Great Lakes between 300 and 301 

 Map of the glacial Lake Agassiz facing 404 



LIST OF PLATES. 



P^ATE PAGE 



I. Sperry Glacier, Montana. (Sperry.) facing 13 



II. Geikie Glacier and Hanging Glacier, British Columbia. (Canadian 



Topographical Survey.) facing 18 



III. View of Illecillewaet and Asulkan Glaciers, British Columbia. 



(Wheeler.) facing 25 



IV. Forest on top of front of Malaspina Glacier, Alaska. (Russell.) facing 33 

 V. Muir Glacier in 1909 between 74 and "5 



VI. North outcrop of Mammoth Bed overlaid by Kansan till, Morea, Pa. 



(Williams.) facing 154 



VII. Topography of deep loess two miles south of margin of Iowan drift. 



northwest ol Iowa City, Iowa. (Todd.) facing 227 



VIII. Stream of water along the margin of Malaspina Glacier. (Russell.) facing 320 

 IX Longitudinal kames near Hingham, Mass. (Bouve\) . . . facing 340 



