338. Moraine with outwash apron in front 313

339. Fosse between an outwash plain and a moraine 314

Earth Features and Their Meaning — Part 21

340. View along an esker in southern Maine 315

Earth Features and Their Meaning — Part 21

341. Outline map of moraines and eskers in Finland 315

Earth Features and Their Meaning — Part 21

342. Sketch maps showing the relationships of drumlins and eskers 316

343. View of a drumlin, showing an opening in the till 317

344. Outline map of the front of the Green Bay lobe to show the relationships of drumlins, moraines, outwash plains, and ground moraine 317

345. Character profiles referable to continental glacier 318

346. View of the flood plain of the ancient Illinois River near Peoria 320

347. Broadly terraced valleys which mark the floods that once issued from the continental glacier of North America 321

348. Border drainage about the retreating ice front south of Lake Erie 321

349. The “parallel roads” of Glen Roy in the Scottish Highlands 322

350. Map of Glen Roy and neighboring valleys of the Scottish Highlands 322

351. Three successive diagrams to set forth the late glacial lake history of the Scottish glens 324

352. Harvesting time on the fertile floor of the glacial Lake Agassiz 325

354. Map showing some of the beaches of Lake Agassiz and its outlet 326

355. Narrows of the Warren River where it passed between jaws of granite and gneiss 327

356. Map of the valley of the Warren River near Minneapolis 327

357. Portion of the Herman beach on the shore of the former Lake Agassiz 328

358. Map of the continental glacier of North America when it covered the entire St. Lawrence basin 329

359. Outline map of the early Lake Maumee 330

360. Map to show the first stages of the ice-dammed lakes within the St. Lawrence basin 330

361. Outline map of the later Lake Maumee and its outlet 332

362. Outline map of lakes Whittlesey and Saginaw 333

364. Map of the glacial Lake Algonquin 334

365. Outline map of the Nipissing Great Lakes 335

366. Probable preglacial drainage of the upper Ohio region 337

367. Diagrams to illustrate the episodes in the recent history of a Connecticut river 338

368. The notched rock headland of Boyer Bluff on Lake Michigan 341

369. View of Mackinac Island from the direction of St. Ignace 342

370. The “Sugar Loaf”, a stack of Lake Algonquin upon Mackinac Island 342

371. Beach ridges in series on Mackinac Island 343