452. Diagrammatic section to illustrate the formation of saucer-like basins between the levees of streams on a flood plain 415 453. Saucer lakes upon the bed of the former river Warren 416 454. Levee lakes developed in series within meanders in a delta plain 417 455. Raft lakes along the banks of the Red River in Arkansas and Louisiana 418 456. Map of the Swiss lakes Thun and Brienz 419 457. Delta lakes formed at the mouth of the Mississippi 419 458. Delta lakes at the margin of the Nile delta 420 459. Diagrams to illustrate the characteristics of barrier lakes 420 460. Dune lakes on the coast of France 421 461. Sink lakes in Florida, with a schematic diagram to illustrate the manner of their formation 421 462. Map of the Arve and the Upper Rhone 426 463. View of the Arve and the Rhone at their junction 427 464. A village in Switzerland built upon a strath at the head of Lake Poschiavo 428 465. View of the floating bog and surrounding zones of vegetation in a small glacial lake 429 466. Diagram to show how small lakes are transformed into peat bogs 430 467. Map to show the anomalous position of the delta in Lake St. Clair 431 468. A bowlder wall upon the shore of a small lake 432 469. Diagrams to show the effect of ice shove in producing ice ramparts upon the shores of lakes 433 470. Various forms of ice ramparts 433 471. Map of Lake Mendota, showing the position of the ridge which forms from ice expansion and the ice ramparts upon the shores 434 472. The great multiple mountain arc of Sewestan, British India 436 473. Diagrams to illustrate the theories of origin of mountain arcs 437 474. Festoons of mountain arcs about the borders of the Pacific Ocean 438 475. The interrupted Armorican Mountains common to western Europe and eastern North America 438 476. A zone of diverse displacement in the western United States 439 477. Section of an East African block mountain 439 478. Tilted crust blocks in the Queantoweap valley 440 479. View of the laccolite of the Carriso Mountain 441