Laboratory apparatus, for simulation of cinder eruptions, [122].

Laboratory models, for study of geological maps, [63].

Laccolites, [143], [441], [442], [447].

Lacroix, A., cited, [148].

Lacustrine deposits, [35].

Lake Agassiz, glacial, [325-328].

Lake Algonquin, [334], [342].

Lake Arkona, [332], [333].

Lake basins, study of, [401].

Lake Bonneville, [199].