CONTENTS. 9 



Chapter X. — The early Wisconsin drift — Continued. Page. 



Section II. Early Wisconsin drift of the Scioto lobe 340 



Introductory statement ., 340 



Tlie outer or Cuba moraine 34I 



Distribution 34I 



Relief 342 



Range in altitude 343 



Topography 343 



Structure and thickness of the drift 344 



Bowlders 347 



Inner border phenomena 347 



Strife 348 



Outer border phenomena 349 



Section III. Probable early Wisconsin drift of the Grand River lobe 351 



Chapter XI. — The interval between the early and late Wisconsin drift 352 



Chapter XII. — The main morainic system of the late Wisconsin stage 354 



Section I. In the Miami lobe 354 



The moraines ; ^ 354 



General statement 354 



Distribution 354 



Relief 356 



Range in altitude 35Q 



Topography 357 



Thickness of the drift 361 



Structure of the drift 362 



Bowlders 371 



Character of the outwash 373 



Strife 380 



Inner border phenomena 38] 



Section II. In the Scioto lobe _ 332 



The members of the system 382 



Distribution 382 



Range in altitude 385 



Relief 386 



Topography 387 



Structure and thickness of the drift 399 



Interlobate tract east of the shoulder 401 



The shoulder of the Scioto lobe 403 



The eastern limb of the main lobe 405 



The western limb of the main lobe 414 



Bowlders 420 



Strise 422 



Imier border phenomena 426 



General features 426 



Weak moraines 426 



Pickerington esker 428 



Circleville esker 499 



Structure and thickness of the drift 431 



Bowlder belts 435 



Inner border phenomena in the shoulder 436 



Section III. In the Grand River lobe 437 



Moraines of the system 437 



Distribution 437 



Range in altitude 439 



Topography 441 



