42 



THE OEGANISM IS A BACILLUS. 



THE GELATINE IS NOT, LIQUEFIED. 



THE ORGANISM IS NON-CHEOMOGENIC. 



THE COLONIES^ APPEAR AS THIN FILMS, OR FLAT 

 DEPOSITS, HAVING AN UNPLEASANT ODOUR. 



Bacillus ureae (Leube), from ammoniacal urine ; short, thick rods ; the 



colonies, by their eoalescenee, give the gelatine the appearance 



of ground glass. 

 Bacillus pyogenes foetidus (Passet), from a rectal abscess ; short 



bacilli, 1'45 /* long, with rounded ends, in pairs or chains ; 



slightly motile. 

 Bacillus coprogenes foetidus (Schottelius), from pigs dying of 



rouget ; resembles Bacillus subtUis, but shorter, with rounded 



ends ; the colonies have a yellowish tinge with an intensely 



foetid odour. 



