Note 215 — Chapter V · THE ACTION OF WORMS IN THE DENUDATION OF THE LAND.
Reading edition
For La Plata, see my ‘Journal of Researches,’ during the voyage of the Beagle, 1845, p. 133. Élie de Beaumont has given (‘Leçons de Géolog. pratique,’ tom. I. 1845, p. 183) an excellent account of the enormous quantity of dust which is transported in some countries. I cannot but think that Mr. Proctor has somewhat exaggerated (‘Pleasant Ways in Science,’ 1879, p. 379) the agency of dust in a humid country like Great Britain. James Geikie has given (‘Prehistoric Europe,’ 1880, p. 165) a full abstract of Richthofen’s views, which, however, he disputes.