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Humboldt, Alexander von, 1769-1859

"COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1"


Aegos Potamos, on the aerolite of, 117, 122.
Aelian on Mount Aetna, 227.
Aerolites (shooting stars, meteors, meteoric stones, fire-balls, etc),
general description of, 111-137; physical character, 112-123; dates of
remarkable falls, 114, 115; their planetary velocity, 116-120; ideas of the
ancients on, 115, 116; November and August periodic falls of shooting stars,
118-120, 124-126; their direction from one point in the heavens, 120;
altitude, 120; orbit, 127; Chinese notices of, 128; media of communication
with other planetary bodies, 136; their essential difference from comets,
137; specific weights, 116, 117; large meteoric stones on record, 117;
chemical elements, 117, 129-131; crust, 129, 130; deaths occasioned by, 135.
Aeschylus, "Prometheus Delivered," 115.
Aetna, Mount, its elevation, 28, 229; supposed extinction by the ancients,
227; its eruptions from lateral fissures, 229; similarity of its zones of
vegetation to those of Ararat, 347.
Agassiz, Researches on Fossil Fishes, 46, 273-277.
Alexander, influence of his campaigns on physical science, 353.
Alps, the, elevation of, 28, 29.
Amber, researches on its vegetable origin, 284; Goppert on the amber-tree of
the ancient world (Pinites succifer), 283.
Ampere, Andre Marie, 58, 193, 236.


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