53 



THE ORGANISM IS A BACILLUS. 



HAS BEEN DESCEIBED, BUT HAS NOT BEEN GBOWN. 



Bacillus leprae, from leprous tubercles ; the bacillus resembles 

 Bacillus tuberculosis, but is more generally curved ; it stains 

 in a similar manner, but appears to take the aniline colours more 

 readily. 



Bacillus of Lustgarten, found in secretion from syphilitic ulcers; 

 straight or curved bacilli, resembling Bacillus tuberculosis, but 

 differing in staining reaction ; the baciUi are not free, but are 

 contained in the interior of round, oval, or polygonal cells, one 

 to eight in a cell. (See Lustgarten's method of staining.)^ 



Bacillus diphtherise vitulorum (LofBer), from calves suffering from 

 a diphtheritic affection of the mouth ; resembles Bacillus diph- 

 therise ; often forms filaments. 



Bacillus bnccalis maximus (MiUer), from saliva; isolated bacilli, 

 or filaments and bundles of filaments, lying parallel or crossing 

 one another, 30 to 150 /t long ; distinctly articulated, the rods 

 being from 2 to 10 ft long, and 1 /t. broad. 



* Lustgarten's stain for the bacillus of syphilis : Place the cover-glass or 

 section in Ehrlich's solution of gentian violet in aniline water, for 2 hours at 

 37° 0. ; wash in absolute alcohol ; immerse in a 1 J per cent, solution of potas- 

 sium permanganate for 10 seconds, and remove the precipitate of manganese 

 dioxide which forms, by washing in an aqueous solution of sulphurous acid. 



