x CONTENTS 



CHAPTER IV. 



PAGE 



THE SYNCHYTRIAN NUCLEUS. Nuclear divisions in the sorus Sorus formation 

 in S. endobioticum The gametic stages in S. endobioticum A species of 

 Synchytrium in a thistle The nuclear cavity The synchytrian nucleolus 

 Plasson ; pycnoplasson, chasmatoplasson . . . . >, . . .78 



CHAPTER V. 



CANCER-BODIES" IN SYNCHYTRIUM AND IN SYPHILIS. Bird's-eye nuclei in 

 Synchytrium ibid, in cancer Living bird's-eye bodies in a syphilitic 

 lesion " Cells of endogenous origin " . . . . . , . 91 



CHAPTER VI. 



PLASSOMYXINEAE AND MOLLUSCUM CONTAGIOSUM. Definition of name Plasso- 

 myxineae Plassomyxa contagiosa, cultures Water cultures Enumeration 

 and details of vital changes in Plassomyxa contagiosa Not a Coccidium 

 Microhenads Kinds of filter used for virus filtration Historical notes 

 of virus filtration The size of microhenads The molluscum body not a 

 symbiotic cell Anaerobic cultures The histology of the tumour Further 

 cultural results Reaction to iodine and sulphuric acid Incubation 

 period of filtered virus The identity of Plassomyxa with the filtered 

 virus Synchytrium and Plassomyxa contagiosa compared The geo- 

 graphical distribution of molluscum Avian molluscum or bird-pox 

 Flagellate- diphtheria in pigeons Details of culture method . . .99 



CHAPTER VII. 



PLASMODIOPHORACEAE. Subdivisions of the group Plasmodiophora brassicae 



Sorosphaera veronicae Spongospora scabies . . . . . . 128 



CHAPTER VIII. 



MYCETOZOA. Broad features of Didymium and Stemonitis-The plasmodium 

 Granules Protoplasmic motion The sclerotium Nuclear processes in 

 Mycetozoa Fertilization Chromidial elements Bionomics A parasitic 

 Mycetozoon Culture of a Mycetozoon Sporangia Morphological details 131 



