CONTENTS. IX 



CHAPTER VIL 



GROWTH OF GEOLOGY. 



PAQE 



Cataclysmal, Uniformitarian, Evolutionary. Foundation- 

 Stones of Geology. The Evolution-Idea in Geology. 

 Age of the Earth. Reading the Rock-Record. Prob- 

 lems of Earth-Sculpture. Recognition of Ice Ages. The 

 Hand of Life upon the Earth. The Problem of Petrog- 

 raphy. Note on the Scientific Development of Geog- 

 raphy. An Illustration of Oceanography .. v 225 



BOOK THREE. 



SCIENCE OF OKGANISMS : LIFE-LORE. 



CHAPTER VIII. 



THE DEEPENING OF PHYSIOLOGY. 



Historical Outline. Physiology of the Living Organism as 

 a Whole. Study of the Functions of Organs. Physiology 

 of Tissues. The Life of Cells. As regards Protoplasm. 

 The Unsolved Secret of the Organism. 283 



The Morphological Question and its Progressive Answers. 

 Foundations of Morphology. The Appreciation of Fossils. 

 Minute Analysis 329 



CHAPTER X. 



GEXEOLOGICAL. 



Geneology. Development of the Individual. Experimental 

 Embryology. Heredity and Inheritance 365 



