forms of, [210], [211];

in relation to obstructions, [209], [210];

stopped by vegetation, [211];

wandering, [209], [211].

Dust, carried out of desert, [206], [222];

volcanic, [122].

Dust wells, [395].

Dutton, C. E., cited, [85], [92], [178], [200], [222], [447].

Earlier figures of the earth, [14].

Earth, a magnet, [23];