Volcanoes: Past and Present

The work provides a systematic survey of volcanic phenomena, describing the forms, structure, and composition of volcanic mountains, lines and groups of vents, and mid-ocean islands. It compares modern eruptions and ancient volcanic deposits through regional case studies across Europe, the Mediterranean, North America, New Zealand, and the British Isles, and treats notable events and districts such as Vesuvius, Etna, Santorin, Stromboli, and Krakatoa. Discussions cover microscopic petrology of volcanic rocks, relations between volcanism and earthquakes, hypotheses on the ultimate cause of volcanic action, the possibility of unusual contemporary activity, and even considerations of lunar volcanism, supported by maps, sections, and illustrations.