FIG. 87. Bacterium Pasteurianum. 



Conversion of long threads into chains of short rods. Culture on " doppel-bier " agar-agar in 

 a Bottcher chamber at 34 C. a. long serpentine thread at the commencement of the 

 experiment; a', the same after five and a half hours ; a", the same after seven hours. The 

 highly swollen central portion is omitted in the drawing, b. long thread with several bends ; 

 b'. after four hours ; b". after six hours ; b'". after nine hours. Only the central portion of 

 the modified thread is shown. Magn. 1000. (After Hansen.) 



