

7 def, 



^tcnt 



ects 



^ 



^navoijji 



-'^nd certainlj;' 

 -r to witness ( 

 able to folb, 



conviction that 



acquaintance?, index 



insformations,: 

 .aterial for revL 



ical and zoologi 

 must be folio 



V • 



K- 



CONTENTS 



« • 



« • 



■ • 



page XXI 



-J 



PART I. 



'•. 



nd competent' 

 o watch and ^ 

 unfolds her set 



The Nature and Source of the Vital Forces, and of 



Organizable Matter. 



CHAPTER I. 



4- 



o^ ins 



lead of t)£- The Persistence of Force: Correlation of the Vital and 



Pages 



content to \% 

 further progr^ 



Physical Forces 



« • 



1-49 



^r 



CHAPTER II. 



The ' Vital Principle ' : Nature of Life 



• « 



50-79 



CHAPTER III. 



I 



Nature of Organizable Materials and of lowest Living Things 80-128 



CHAPTER IV. 



Relations of Animal, Vegetable, and Mineral Kingdoms : 



Theories of Organization 



4 « 



.. 129-168 



CHAPTER V. 



^ Modes of Origin of Reproductive Units and of Cells 



.. 169-239 



