CONTENTS 



PART I. 

 THE REALM OF ORGANISMS AS IT IS. 



LECTURE 1. 



PAGE 



THE UNFATHOMED UNIVERSE AND THE AIM OF 



SCIENCE 3 



1. Man's Early Outlook on Nature, 3 2. Growing Rec- 

 ognition of a Scientific Order, 4 3. Aims of Science, 8 

 4. Limitations of Natural Knowledge, 13 5. The Func- 

 tion of Feeling in our View of Nature, 25 6. Towards 

 a Philosophical interpretation of Nature, 34 7. Science 

 and Religion, 39. 



LECTURE 11. 



THE REALM OF ORGANISMS CONTRASTED WITH THE 



DOMAIN OF THE INORGANIC 49 



1. Things and Living Creatures, 49 2. The Charac- 

 teristic Features of the Realm of Organisms, 50 3. A 

 Multitude of Individualities, yet a Systema Naturze, 61 

 4. Abundance and Insurgence of Life, 53 5. Struggle 

 and Sifting, 56 6. A System of Inter-related Lives, 58 

 7. The Prevalence of Adaptations, 59 8. The Pervasive- 

 ness of Beauty, 62 9. The Other Side of the Picture, 63 

 10. Resemblances between the Realm of Organisms and 

 the Domain of the Inorganic, 63 11. Contrasts between 

 the Realm of Organisms and the Domain of the Inorganic, 

 71 12. The Suitability of the Inorganic to be the Basis 

 and Environment of the Organic, 73. 



LECTURE III. 



THE CRITERIA OF LIVINGNESS 79 



1. Living and Not-living, 79 2. The Essential Charac- 

 teristics of Living Organisms, 80 3. Persistence of a Com- 

 plex Specific Metabolism and of a Corresponding Specific 

 Organisation, 81 4. The Capacity of Growth, Reproduc- 

 tion, and Development, 91 5. Effective Behaviour, Regis- 

 tration of Experience, and Variability, 97. 

 ix 



