58 



BACTERIOLOGY, 



of the same diameter in all directions. (See Fig. 2, u, 

 b, c, d, e.) 



FIG. 2. 



r\ _ Q * 



'oo 



c 



flO.o 0" ^ # OU ^-* 



<feV & rf> 05, * rri 



c * o% o ego tT 



c d e 



a. Staphylococci. 6. Streptococci, c. Diplococci. d. Tetrads, e. Sarcinse. 



FIG. 3. 



d e f 



a. Bacilli in pairs. 6. Single bacilli, cand d. Bacilli in threads. 



e and /. Bacilli of variable morphology. 



FIG. 4, 



^ - ' <YI 



a b c <i 



a and d. Spirilla in short segments and longer threads the so-called comma 

 forms and spirals, b. The forms known as spirochseta. c. The thick spirals 

 sometimes known as vibrios. 



