CONTENTS 



LECTUKE 



XX. 



XXI. 



XXIL 



XXIII. 



XXIV. 



XXV. 



XXVI. 



XXVII. 



XXVIII. 



XXIX. 



XXX. 



XXXI. 

 XXXII. 



XXXIII. 



XXXIV. 



XXXV. 



XXXVI. 



INDEX 



Eegeneration ....... 



Eegenekation [continued) ..... 



Sh<are of the Parents in the Building up of the 

 Offspring ....... 



Examination of the Hypothesis of the Trans 

 missibility of functional modifications . 



Objections to the Thesis that Functional Modi 



FICATIONS are NOT TRANSMITTED . 



Germinal Selection ...... 



Germinal Selection {continued) 



The Biogenetic Law ..... 



The General Significance of Amphimixis 



The General Significance of Amphimixis {continued) 



In-breeding. Parthenogenesis, Asexual Keproduc 



tion, and their Consequences . 

 The Influences of Environment 



Influence of Isolation on the Formation of 

 Species ....... 



Origin of the Specific Type .... 



Origin of the Specific Type {continued) . 



The Origin and the Extinction of Species . 



Spontaneous Generation and Evolution : Con 



CLUSION .....•• 



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364 

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