TABLE OF CONTENTS xi 



CHAPTER XVIII 



PAGE 



The Electric Charges on the Spores 192 



CHAPTER XIX 

 The Coprinus Type of Fruit-bod}' . . . . . . . . .196 



CHAPTER XX 



The Dispersion of the Spores after Liberation from the Fruit-bodies — 



Falck's Theory 216 



CHAPTER XXI 



The Dispersion of Spores by Animals — Coprophilous Hymenomycetes — 



Slugs and Hymenomycetes 224 



PART II 



Some Observations upon the Discharge and Dispersion of the 

 Spores of Ascomycetes and of Pilobolus 



CHAPTER I 



The Dispersion of Spores by the Wind in Ascomycetes — Puffing — The 

 Physics of the Ascus Jet in Peziza — The Fixation of the Spores in the 

 Ascus of Peziza repanda— Comparison of the Sizes of Wind-borne Spores 

 in Ascomycetes and Hymenomycetes — The Helvellacese .... 233 



CHAPTER II 



The Dispersal of the Spores of Ascomycetes by Herbivorous Animals illus- 

 trated by an Account of Ascobolus immersus — Pilobolus, Empusa muscae — 

 Lycoperdon — The Sound produced by the Discharge of Spores with 

 special reference to Pilobolus . . . . . . . . .251 



General Summary — 



Part 1 261 



Part II 268 



Explanation of Plates I.-V 270 



Plates I.-V To follow p. 274 



GENERAL INDEX 275 



