TOO SULPHUR BACTERIA 



already assumed an irregular form preparatory to breaking 

 up, and which is already showing at its basal end small 

 independent masses of plasma, each containing a few grains 



/ 



Fig. 7. — Pleomorphism of Beggialoa alba. 

 At a is shown a filament breaking up into separate clumps of plasma, each 



including a number of sulphur granules. In the lower part of the 



figure, four of these clumps are shown. 

 In b the formation of these clumps is shown completed, although the 



alignment of the filament is still maintained. 

 In c, d, e are shown the different forms into which the members of the 



clumps develop, namely, free cocci, short rods, or zoogloea masses. 



Either cocci or short rods may be found in the zoogloea masses. 

 At / is shown a rigid spiral cell formed by separation from the filament. 



of sulphur. In the next state (Fig. yb) the filament has given 

 place to a number of separate clumps of plasma. Next, the 

 clumps break up into micrococci which may become motile in. 



