Gondwana Land, [16].

Gorges, through rock bars, [378].

Grabau, A. W., cited, [361], [366].

Grading of flood plain, [162].

Grand Cañon of the Colorado, [146], [169], [174], [215], [443].

Grand River outlet, [333].

Granite, [462];

dome structure in, [152], [157].

Granite domes, [221].

Granitic texture, of igneous rocks, [33].