V 



% 





% 



(Reproduced frim the Jnurnal of Ceneral Microbiology hy permission of Mr A. A. Tuffery). 



Fig. 18 



CYTOLOGY OF OSCILLOSl'IRA 



Because of its relatively great size, an exceptionally clear picture of the bacterial nucleus 

 is afforded by the giant bacterium Oscillospira. In (1) the twin, rod-shaped nucleoids are 

 shown both in profile and endwise. (2) Shows their arrangement within small, disc-like cells. 

 In (3) and (4), a, b and c represent progressively earlier stages in the maturation of the spore 

 and condensation of its nuclear content. (Acid-Giemsa, •: 1,000). 



