This essay, incongruously slipped into his book The Wonderful Century in 1898, represents one of the best examples of Wallace’s talent as a popular expositor. Transcribed from the Swan Sonnenschein & Co. edition of 1898. Original pagination indicated within double brackets. See more information on Wallace at The Alfred Russel Wallace Page,
Copyright 2010 by Charles H. Smith. All rights reserved. This transcription, in whole or in part, may not be reposted or otherwise reproduced for publication without the written consent of Charles H. Smith, Western Kentucky University.


Physical and Environmental Geography