44 



THE OEGANISM IS A BACILLUS. 



THE GELATINE IS NOT LIQUEFIED. 



THE OEGANISM IS NON-CHEOMOGENIG. 



THE COLONIES APPEAE AS WHITE DISCS OE NAIL- 

 HEAD PEOJECTIONS, WITH AN lEEEGULAE 

 OE GEANULAE BOEDEE. 



Bacillus typhosus, from the spleen, diseased intestinal glands, and 

 alvine discharges in typhoid fever ; baoiHi 1 to 3 ^ long, with 

 rounded ends, actively motile ; refractive granules sometimes 

 appear at the ends of the rods ; numerous flageUa may be 

 demonstrated ; will not stain by Gram. 



Bacillus of Friedlander (pneumoooccus), short rods with rounded 

 ends, enclosed in a capsule ; forms the characteristic nail-head 

 growth in gelatine stick cultures ; the capsule cannot be demon- 

 strated in specimens from artificial media, but can be seen in 

 preparations taken from the blood of an inoculated animal and 

 properly stained ; the rods often resemble micrococci, and are 

 usually in pairs or short chains ; does not stain by Gram. 



Bacillus endocarditidis griseus, from ulcerated cardiac valves ; short 

 motile rods, 1 to 3 ju, long, with round or pointed ends ; stains 

 by Gram. 



Bacillus meningitidis purulentae, from the pus from a case of purulent 

 meningitis ; baciUi 2 jj. long, often in filaments ; does not stain 

 by Gram ; the colonies have a pale brown colour. 



Bacillus pneumosepticus (Babes), from the blood in a case of septic 

 pneumonia ; short, straight bacilli ; does not stain by Gram. 



Bacillus crassus sputigenus (Kreibohm), from sputimi ; short, thick, 

 sausage-shaped bacilli, very irregular in outhne ; sporulation 

 occurs at 85° C. ; in stick cultures forms a naU-head growth ; 

 stains by Gram. 



Bacillus candicans (Frankland), from soil ; short, thick bacilli re- 

 sembling micrococci; in gelatine stick cultures the colonies 

 resemble drops of milk. 



