CONTENTS. 11 



Chapter X. Later moraines ofthe Lake Michigan, Saginaw, and Huron-Erie lobes— Continued. Page. 



Correlatives in Ohio, New York, and Ontario, by F. B. Taylor 291 



General correlation 291 



Detroit interlobate moraine in southwestern Ontario 292 



Chapter XI. Port Huron morainic system and probable correlatives 293 



Port Huron morainic system in Huron and Saginaw basins, by F. B. Taylor 293 



General relations 293 



Main moraine of Port Huron morainic system 294 



Distribution 294 



Topography 295 



Altitude and relief 295 



Character 296 



Structure of the drift 296 



Thickness 296 



Composition 297 



Till plains 297 



Outwash 297 



Glacial drainage , 298 



Ubly channel 298 



Cumber, Hay Creek, Argyle, and Bad Axe spillways 299 



Bay City moraine 300. 



Tawas moraine 301 



Correlatives of the Port Huron morainic system in Ontario and New York, by F. B. Taylor 301 



Port Huron morainic system in northern Huron and northern Michigan basins, by Frank Leverett 302 



General relations 302 



Distribution 302 



Topography 303 



Character , 303 



Relief 304 



Structure of the drift 304 



Outwash 305 



Inner border 305 



Huron slope 305 



Distribution of moraines 305 



Cheboygan moraine 306 



Eskers. 307 



Drumlins ' 307 



Glacial strite 30S 



Lake Michigan slope 308 



Manistee moraine , 308 



Correlatives of the Manistee moraine in Wisconsin 309 



Islands in the northern part of Lake Michigan 310 



Drumlins in the Grand Traverse area 310 



Buried lacustrine (?) clays of Grand Traverse region 314 



Chapter XII. Outline of glacial and postglacial history of the Great Lakes region, by F. B. Taylor 316 



Preglacial history of the Great Lakes basins 316 



Stages of development 316 



Stage of construction 316 



Stage of emergence • 317 



Stage of destruction 317 



Differential uplift 318 



Glacial history of the Great Lakes basins 318 



Early stages 318 



Great Lakes during and after the retreat of the last ice sheet 319 



Complexities of the history 319 



Shrinkage of the ice sheet into the lake basins 319 



Oscillations of the ice front 320 



The first lakes 320 



Glacial lakes in the Huron-Erie basin 321 



Complexities of development 321 



Lake Maumee 322 



Lake Saginaw 323 



