372. Notched stack of the Nipissing Great Lakes at St. Ignace 343
373. Series of diagrams to illustrate the evolution of ideas concerning the uplift of the lake region since the Ice Age 344
374. Map of the Great Lakes region to show the isobases and hinge lines of uptilt 345
375. Series of diagrams to indicate the nature of the recovery of the crust by uplift when unloaded of an ice mantle 346
376. Portion of the Inner Sandusky Bay, for comparison of the shore line of 1820 with that of to-day 350
377. Ideal cross section of the Niagara Gorge to show the marginal terrace 353
378. View of the bed of the Niagara River above the cataract where water has been drained off 353
379. View of the Falls of St. Anthony in 1851 354
380. Ideal section to show the nature of the drilling process beneath the cataract 355
381. Plan and section of the gorge, showing how the depth is proportional to the width 355
382. Comparative views of the Canadian Falls in 1827 and 1895 356
383. Map to show the recession of the Canadian Fall 357
384. Comparison of the present with the future falls 358
385. Bird’s-eye view of the captured Canadian Fall at Wintergreen Flats 358
387. Map of the cuestas which have played so important a part in fixing the boundaries of the lake basins 361
388. Bird’s-eye view of the cuestas south of Lakes Ontario and Erie 362
389. Sketch map of the greater portion of the Niagara Gorge to illustrate Niagara history 363
390. Snowdrift hollowing its bed by nivation 368
391. Amphitheater formed upon a drift site in northern Lapland 369
392. The marginal crevasse on the highest margin of a glacier 370
393. Niches and cirques in the Bighorn Mountains of Wyoming 371
394. Subordinate cirques in the amphitheater on the west face of the Wannehorn 371
395. “Biscuit cutting” effect of glacial sculpture in the Uinta Mountains of Wyoming 372
396. Diagram to show the cause of the hyperbolic curve of cols 372
398. Diagrams to illustrate the formation of comb ridges, cols, and horns 374
399. The U-shaped Kern Valley in the Sierra Nevadas of California 375
400. Glaciated valley wall, showing the sharp line which separates the abraded from the undermined rock surface 375
401. View of the Vale of Chamonix from the séracs of the _Glacier des Bossons_ 376