SPIROCHATA BALBIANIIT AND SPIROCHATA ANODONTA. 1 
Spirocheta (Trypanosoma) balbianii (Certes) 
and Spirocheta anodonte (Keysselitz): 
’ their Movements, Structure, and 
Affinities. 
By 
H. B. Fantham, B.Sc.(Lond.), A.R.C.S8., 
Derby Research Scholar and Assistant in the Zoological Department, 
University College, London; and St. Mary’s Hospital Medical 
School. 
With Plates 1—3, and 11 Text-figures. 
CoNnTENTS. 
PAGE 
Introduction : sah : . : 2 
Historical ; ; ? d : 5 
Material and Occurrence of Parasite : , 6 
Methods: 
For Fresh Material . : ; 9 
For Fixed and Stained Material ’ i eel 
General Structure . : . >  dléb 
Movements 5 : ? ; Bo G6 
The Mechanism of Movement . ; ‘ Al 
Detailed Morphology : 
~ Cytoplasm ‘ : : : 26 
Membrane : ‘ : : 5 | 6S 
Nucleus ; ‘ 5 : oo 
Division: 
Longitudinal. : : : . AQ 
Transverse F é : ; 4a 
General Note . : : : 5 213 
Note on Polymorphism, Conjugation, Encystment . ney 
Environmental Effects, Cultures, Chemical Reactions 249 
VOL. 52, PART 1.—NEW SERIES. J 
