Note 73 — Chapter VIII
Reading edition
Humboldt ascribes the absence of glaciers in the Andes to the extreme steepness of the sides, and the excessive dryness of the air. Dr. Loomis, above quoted, mentions indications of glacial action—moraines, and polished and striated rocks—on the crest of the Cordillera, between Peru and Bolivia, lat. 21° S.