Mainsprings of civilization. Author: Ellsworth Huntington Publisher: New York, Wiley [1945] OCLC Number: 14739814 Description: xii, 660 p. ill. Contents: pt. 1. The background of civilization: The supreme fact -- The background of civilization -- pt. 2. Heredity: The problem of race -- The instability of races -- Migration and human quality -- The Puritans as a test case -- Character and inheritance -- The interplay of culture and heredity -- Evolution of divergent types -- The selective process in history -- Junkers and nazis -- pt. 3. Physical environment and human activity: The geographic pattern of civilization -- Health and national character -- Human activity and temperature -- Social conditions, religion, and climate -- The seasons -- Weather and storms -- Regions and seasons of mental activity -- Psychological reactions to weather -- The distribution of civilization -- Coldward and stormward -- Diet and national character -- Agriculture, disease, and diet -- Cycles, rhythms, and periodicities -- Two intriguing cycles -- Broader aspects of environmental cycles -- Historic phases of climatic cycles -- Worldwide climatic cycles -- Geographical optima of civilization -- Ages of darkness and revival.