' / 



TEOPICAL NATURE, 



AND 



OTHER ESSAYS. 



ALFEED R. AVALLACE. 



AUTHOR OF "THE MALAY ARCHIPELAGO," "THE GEOGRAPHICAL DISTRIBUTION OF ANIMALS," 

 "CONTRIBUTIONS TO THE THEORY OF NATURAL SELECTION," ETC., ETO. 



If 0tT0oit : 

 MACMILLAN AND CO. 



1878. 



[Tlie Ilitjlit of Translation and Reproduction is Reserved.] 



