378 BACTERIOLOGY. 



every segment of the long thread, and gives to the thread 

 the appearance of a string of glistening beads. (Fig. 

 82.) In this stage they remain but a short time. The 



FIG. 81. 



! S $ 





Bacillus anthracis. Plaited and twisted threads seen in fresh growing 

 cultures. X about 400 diameters. 



chains of spores, which are held together by the remains 

 of the cells in which they formed, become broken up, 

 and eventually nothing but free oval spores, and here 

 and there the remains of mature bacilli which have 

 undergone degenerative changes can be found. In this 



FIG. 82. 



Threads of bacillus anthracis containing spores. X about 1200 diameters. 



condition the spores, capable of resisting deleterious 

 influences, remain and, unless their surroundings are 

 altered, have been seen to continue in this living, though 



