PLATE XXIV. 



FIG 1. TYPHOID BACILLUS. 



Prom a culture 24 hours' old, incubated at 87 C., and made on the surface of agar. 

 Stained with carbol fuchsin, washed in water acidulated with acetic acid. Straight or 

 very slightly curved rods, the shortest of which appear as oval : the bacilli present 

 great variations in length and breadth: parallel grouping is fairly common. The 

 filamentous forms exhibit no trace of a segmented or composite structure. 



FIG. 2. TYPHOID BACILLI. 



Five typhoid bacilli, from a dried preparation stained by Van Ermengen's silver 

 method, and showing the long wavy flagella arising around them. The largest number 

 shown is seventeen, but this may be exceeded. 



