242 MICRO-ORGANISMS AND DISEASE [chap. 



3. On staining flagella the typhoid bacillus of a recent 

 Agar culture is seen to be possessed of a large number of 

 long wavy or spiral flagella extending in a radial fashion on 

 — or rather coming off vertically from— the whole length of 

 the bacillus. From a considerable experience I am pre- 

 pared to attribute to this particular distribution, and to the 



Fig. 8S. — St.\b Si'dct.'lture nr the Tyj'hoid Bacillus. 

 Macrnified twice. 



abundance of long flagella, a very important differential 

 value. (See illustrations of flagella in Chapter VI.) 



4. In gelatine plates the typhoid bacillus grows markedly 

 slower than the typical bacillus coli ; the colonies of the 

 former, more translucent, homogeneous, show after some day's 

 an indication of concentric layers ; but their outlines are as 



