Via CONTENTS. 



CHAPTER XI. 



Reproduction in plants Gemmation and fission Resemblances be- 

 tween plants and Hydroid zoophytes Reproduction of Angio- 

 spermous flowering plants Reproduction of ferns, . 119-126 



CHAPTER XII. 



Spontaneous generation Development of living beings in organic 



infusions Experiments of Dr Bastian, .... 127-133 



CHAPTER XIII. 



Origin of species Doctrine of Special Creation Doctrine of Evol- 

 ution Views of Lamarck The Darwinian hypothesis 

 Theory of natural selection Sexual selection Leading objec- 

 tions to the theory of the evolution of species by natural 

 selection, . . . . . . " . . . 134-143 



CHAPTER XIV. 



Distribution in space Geographical distribution Zoological pro- 

 vinces Bathymetrical distribution Discoveries in the deep 

 sea Conditions of life in the deep-sea animals, . . 144-150 



CHAPTER XV. 



Distribution in time Laws of geological distribution Chief divi- 

 sions of the stratified series Contemporaneity of strata Geo- 

 logical continuity Imperfection of the palseontological re- 

 cord, . 151-160 



