CONTENTS. 



Page 



Description of the fungus 7 



Ascoinycetous stage 7 



Couidinl fruits 11 



Microconidia 11 



Macrocoiiidia 13 



Chlamydospores 13 



rycuidia(?) 13 



Ett'ect of uiodiQcations of the substratum *. 13 



(1) Tlio production of a stroma 13 



(2) The color of the mycelium 14 



(3) The color of the perithecia 23 



(4) The development of the perithecia 26 



Other biological peculiarities 30 



Host plants 31 



Habitat, time of occurrence 31 



Geographical distribution 31 



Parasitism, infection experiments, etc 32 



Number of successful infectious 34 



Cotton and cowpea inoculations, cross-inoculations 35 



One fungus or three ? 39 



Vitality 41 



Symptoms produced, etc 42 



Other wilt diseases 44 



Relationships 44 



Scientific name 46 



Restriction of the melon wilt 48 



Unfinished work 49 



Exsiccati 50 



Previous literature , •. 50 



Appendix 51 



Description of plates 54 



5 



