BACTERIA. 
21 
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. 
