Driftless area, map of, [298].

Drift sites, [368], [369].

Drowned rivers, [251].

Drumlins, [311], [316], [317], [399].

Dry deltas, [213].

Drygalski, E. von, cited, [273], [279], [295], [296].

Dry weathering, in deserts, [201].

Dune, war with oasis, [216].

Dune lakes, [421].

Dunes, [222];