BACTERIA. 11 



chain of cells results so that what looks under the 

 microscope like one individual may be three or more 

 generations. Fig. n. 



The ball forms divide in the same way along a di- 

 ameter. Some, however, divide in more than one di- 



FIG.- 12. REPRODUCTION OF COCCI BY FISSION. 



(a) Division into two.. (c) Division into four. 



(b) Chains of cocci. (d) A sheet of four cocci. 



rection, so that the colony of daughter cells may 

 touch at one side only, like closely strung beads, or 

 on two sides, making a sheet or film of cells, or they 

 may become piled upon each other like a cube of 

 marbles. Fig. 12. 



