CONTENTS 



PLANT DISTRIBUTION. 



CHAPTER PAGE 



IX. English and American Flowers {Fortnightly Bevieiv, 



October, 1891) 199 



X. Flowers and Forests of the Far West {Fortnightly 



Review, December, 1891) 213 



ANIMAL DISTRIBUTION. 



XI. The Pal^arctic and Nearctic Regions {Natural 



Science, June, 1894) 235 



XII. The Beetles of Madeira and their Teachings 

 {Transactions of the Entomological Society of London, 

 1871) 250 



XIII. Evolution and the Distribution of Animals {Nine- 

 teenth Century, February, 1879) 265 



THEORY OF EVOLUTION. 



XIV. The Origin of Species and Genera {Nineteenth 



Century, January, 1880) 283 



XV. A Critic of Natural Selection Answered {Natural 



Science, September, 1894) 305 



XVI. Are Acquired Characters Inherited ? {Fortnightly 



Bevieio, April and May, 1893) 315 



XVII. The Method of Organic Evolution {Fortnightly 



Review, February and March, 1895) 345 



XVIII. The Problem of Utility : Are Specific Characters 

 always or generally Useful? {Journal of the 

 Linnean Society, 1896) 378 



