genetical, [445];

largely shaped by erosion, [435];

of outflow and upheap, [440];

origin and forms of, [435];

truncated at coast lines, [438].

Mt. Etna, [125], [126].

Mt. Vesuvius, [94];

appearance of, from Naples at night, [129];

ash curtain, during eruption, [132];

ash-fall over, 1906, [133];