Produced by Robin Monks, Wayne Hammond and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/Canadian Libraries) [TRANSCRIBER'S NOTE: Spelling maintained as closely as possible to the original document, while obvious typos have been corrected. Emdashes in original text for negative temperatures changed to minus signs to standardize temperatures.] CLIMATIC CHANGES THEIR NATURE AND CAUSES PUBLISHED ON THE FOUNDATION ESTABLISHED IN MEMORY OF THEODORE L. GLASGOW OTHER BOOKS BY THE SAME AUTHORS ELLSWORTH HUNTINGTON A. _Four books showing the development of knowledge as to Historical Pulsations of Climate._ The Pulse of Asia. Boston, 1907. Explorations in Turkestan. Expedition of 1903. Washington, 1905. Palestine and Its Transformation. Boston, 1911. The Climatic Factor, as Illustrated in Arid America. Washington, 1914. B. _Two books illustrating the effect of climate on man._ Civilization and Climate. New Haven, 1915. World Power and Evolution. New Haven, 1919. C. _Four books illustrating the general principles of Geography._ Asia: A Geography Reader. Chicago, 1912. The Red Man's Continent. New Haven, 1919. Principles of Human Geography (with S. W. Cushing). New York, 1920. Business Geography (with F. E. Williams). New York, 1922. D. _A companion to the present volume._ Earth and Sun: An Hypothesis of Weather and Sunspots. New Haven. In press. STEPHEN SARGENT VISHER Geography, Geology and Biology of Southern Dakota. Vermilion, 1912. The Biology of Northwestern South Dakota. Vermilion, 1914. The Geography of South Dakota. Vermilion, 1918. Handbook of the Geology of Indiana (with others). Indianapolis, 1922. Hurricanes of Australia and the South Pacific. Melbourne, 1922. CLIMATIC CHANGES THEIR NATURE AND CAUSES BY ELLSWORTH HUNTINGTON Research Associate in Geography in Yale University AND STEPHEN SARGENT VISHER Associate Professor of Geology in Indiana University [Illustration] NEW HAVEN YALE UNIVERSITY PRESS LONDON: HUMPHREY MILFORD: OXFORD UNIVERSITY PRESS MDCCCCXXII COPYRIGHT 1922 BY YALE UNIVERSITY PRESS Published 1922. THE THEODORE L. GLASGOW MEMORIAL PUBLICATION FUND