x TABLE OF CONTEXTS 



CHAPTER VII 



PAGK 



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-dischai-ge — 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 Hymenium — Methods L, 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 . . . . 1G4 



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 . L8 I 



