iv Contents 



PACK 



biosis The Double Life of Lichens The Seamy Side of 

 Heather Man and the Web of Life The Importance of 

 Birds A Multitude of Linkages The Story of the Gullery 

 The Weird Ways of Parasites Adaptations of Parasites 

 The Romance of Parasitism Pearls and Parasites Theoreti- 

 cal Aspects. 



XIX. BIOLOGY. BY JULIAN S. HUXLEY, M.A. . 671 



Matter, Living and Lifeless Can Mind Arise from Lifeless 

 Matter? Theories of the Origin of Life Protoplasm and 

 the Origin of the Body The Units of Life The Blood- 

 Cells The Brain-Cells The Body a Huge Cell-State 

 Reproduction Mothers but no Fathers Regeneration Pro- 

 ducing a New Head Remarkable Experiments Losing a 

 Tail to Save a Life Old Age and Death Resting Stages 

 The Ductless Glands. 



XX. THE CHARACTERISTICS OF LIVING CREATURES . 701 



The All-Round View Innumerable Species Abundance and 

 Insurgence of Life. 



XXI. THE ROMANCE OF CHEMISTRY . . .711 



Shuffling the Chemical Cards Forms of Matter Mixtures and 

 Compounds Molecules and Atoms Chemical Change 

 Demonstrating the Invisible Liquefaction of Gases Trans- 

 mutation of Elements Chemistry of the Living Creature 

 The Remarkable Power of Carbon The Regulation of 

 Vital Phenomena Circulation of Matter Circulation of 

 Nitrogen Catalysts Ferments Crystals Diamonds Col- 

 loids A Story about Helium. 



XXII. THE CHEMIST AS CREATOR .... 741 



The Conservation of Matter Constancy in the Properties of 

 Elements Making Vital Products Artificially Outdoing Na- 

 ture Coal-Tar Colours Artificial Perfumes Synthetic Rub- 

 ber Sugar-Making Chemical Conjuring Transformations 

 of Cellulose Capturing Nitrogen The Potash Supply 

 Wealth out of Waste. 



XXIII. METEOROLOGY 761 



The Causes of Weather The Two Regions of Atmosphere 

 Sounding the Upper Air The Tracks of the Balloons The 

 Narrow Limits within which Life is Possible Pressure and 

 Temperature The Effects of Turbulence in the Atmosphere 



