THE 



Polar and Tropical 

 WOELDS: 



A DESCRIPTION^ OF MA]^ AND NATURE 



IN THE 



|olap and f q'jatorial Hsgions of ihe 



i 



BY DR. G. HABTWIG, 



AUTHOR OF " THE SEA AND ITS LIVING WONDERS," AND THE 

 " HARMONIES OF NATURE." 



EDITED, WITH ADDITIONAL CHAPTERS, BY 



DR. A. H. GUERNSEY. 



WITH NEARLY TWO HUNDRED ILLUSTRATIONS. 



PUBLISHED BY 



JOHNSON & McCLAIN, 



PHILADELPHIA, PA. 

 1 871. 



