CONTENTS 



PAGE 



General Introduction (by Henri Berr) . . v 



Foreword to the First Series (by Henri Berr) xxi 



Part I. THE FORMATION OF THE EARTH . i 



Chap. 



I. The Birth of the World .... 3 



II. Transformations of Land or Water . 15 



III. The Sun and Climatic Variation . . 38 



Part II. THE PRIMITIVE FORMS OF LIFE . 57 



Chap. 



I. The Appearance of Life .... 59 



II. The Genealogical Basis of Organic 



Differentiation ..... 74 



III. The Genesis of the Typical Forms of the 



Plant Kingdom ..... 96 



IV. Primitive Animal Forms .... 112 



V. Attitudinal Changes and Structural 



Modifications 126 



VI. The Peopling of the Open Sea, the Ocean 



Depths, and the Land Masses . . 146 



' > 



■ 



I '-> >' ^ 



