BACTERIA 



divide irregularly and form masses resembling bunches of grapes, 

 they are spoken of a staphylococci (Fig. 2). 



Coeci that divide in three directions are called sarcina. One 

 single coccus, by division in three directions, forms cubes of eight 



FIG. i. Large and very large streptococci. (Kolle and Wassermann.) 



or more, each of which becomes globular and equal in size to the 

 parent. 



Motile micrococd are those that divide in two directions of space 

 and have flagella. They are known as planococci. 



FIG. 2. Staphylococci. Streptococci. Diplococci. Tedrads. Sarcinae. 



(Williams.) 



Micrococci that divide in three directions, and are motile, are 

 called planosarcina (Fig. 3). 



Bacteria that resemble straight rods are called bacilli. These 

 may be short and thick, or long and thread-like; are never curved, 

 but may be slightly bent. 



