x TABLE OF CONTENTS 



CHAPTER VII 



PAGE 



The Demonstration of the Fall of Spores by means of a Beam of Light . 94 



CHAPTER VIII 

 The Spore-fall Period . . . .102 



CHAPTER IX 



Desiccation of Fruit-bodies A Xerophytic Fungus Flora The genus 



Schizophyllum 105 



CHAPTER X 



External Conditions and Spore-discharge The Effect of Light The Effect 

 of Gravity The Effect of the Hygroscopic Condition of the Air The 

 Effect of Heat The Effect of Alteration in the Gaseous Environment 

 The Effect of Anaesthetics 120 



CHAPTER XI 



The Violent Projection of Spores from the Hyraenium Methods I., II., III., 



IV., and V 133 



CHAPTER XII 



The Mechanism of Spore-discharge . . 148 



CHAPTER XIII 

 The Specific Gravity of Spores . 153 



CHAPTER XIV 



The Size of Spores Poynting's Plate Micrometer 158 



CHAPTER XV 

 The Rate of Fall of Spores and Stokes' Law Appendix < . . . 164 



CHAPTER XVI 



The Effect of Humidity on the Rate of Fall of Spores 179 



CHAPTER XVII 



The Path of the Spores between the Gills, &c. The Sporabola Appendix 



on the Motion of a Sphere in a Viscous Medium, by Dr. Guy Barlow . 184 



