TABLE OF CONTENTS xiii 



CHAPTER II 



TAQE 

 THE EFFECT OF DIPLOID ON HAPLOID MYCELIA IN COPRINUS LAGOPUS AND 

 THE BIOLOGICAL SIGNIFICANCE OF CONJUGATE NUCLEI IN THE 

 HYMENOMYCETES AND OTHER HIGHER FUNGI 



Introduction — Definition of the Terms Diploidisation and Diploidise — Coprinus 

 lagopus — Metliods — Criteria of Sex — The Four Kinds of Haploid and the 

 Two Kinds of Diploid Mycelia — The Pairing of Haploid and Diploid 

 Mycelia — The Rate of Movement of Nuclei through a Haploid Myceha 

 which is being diploidised by (1) another Haploid Mycelium or by 

 (2) a Diploid Mycelium — Direction taken by Nuclei in passing through a 

 Haploid Mycelium which is becoming Diploidised — A Sex-factor Analysis 

 of a Diploid Mycelium derived from a Large Haploid Mycelium which 

 has been diploidised by a Small Diploid Inoculum — Observations, on 

 the Conversion of Haploid into Diploid Hyphae — The Number of Radial 

 Hyphae of a Large Haploid Mycelium which are converted into Diploid 

 Hyphae through the Action of a Suitable Haploid or Diploid Inoculum 

 — The Frequency of Conjugate Nuclear Division in a Radial Diploid 

 Hypha — Hyphal Fusions between All Possible Kinds of Mycelia — The 

 Diploidisation of a Haploid Mycelium by a Theoretically Incompatible 

 Diploid Mycelium — The Biological Significance of the Diploidisation of 

 a Haploid Mycelium by a Diploid Mycelium — The Biological Significance 

 of Conjugate Nuclei . . . . . . . . . .187 



GENERAL SUMMARY 295 



EXPLANATION OF PLATES I-IV 307 



PLATES I-IV 310 



GENERAL INDEX 315 



