Earth Features and Their Meaning / An Introduction to Geology for the Student and the General Reader

by William Herbert Hobbs

of exudation, [94].

Volcanic necks, [140].

Volcanic pipes, [140].

Volcanic plugs, [139], [140].

Volcanic projectiles, [121].

Volcanic rocks, [32].

Volcanic sand, [122].

Volcano belts, of the earth, [98].

Volcano, definition of, [95].

Volcano, eruption in 1888, [118], [120], [147];