108 SPECIAL BACTERIOLOGY 



Pathogenesis. Inoculation of various animals has failed, only 

 local reactions being manifested. 



STREFrOTHRIX EPPINGER. 



This organism was found by Eppinger in a brain abscess. It 

 consists of a branched mycelium. Fruit hyphae and spores are only 

 found in potato cultures. 



Staining Reactions. It stains by the Gram method. 



Biological Characters. It is aerobic, growing best at 37 C. 

 On Gelatine, yellow warty-shaped elevated colonies develop, which 

 do not liquefy the gelatine. 



On Glucose Agar the growth is orange coloured. 

 On Potatoes it forms a yellowish-red coating. 

 Bouillon remains clear, but flaky lumps develop. 



Pathogenesis. Guinea-pigs and rabbits inoculated with this 

 organism develop a pseudo-tuberculosis. 



STREPTOTHRIX FARCINICA (ROSSI DORIA). 



(Fr. Bacille du farcin du breufs (Nocard) ; Eng. Bovine Farcy.) 



This bovine malady was formerly very prevalent in France, and 

 exists also in Guadeloupe. The lesions are usually located in the 

 limbs, and consist of swelling of the lymph vessels, terminating at the 

 corresponding lymph-glands, those most usually affected being the 

 brachial, pectoral, and prepectoral groups, which suppurate slowly. 

 When the abscesses are opened the animal seems to recover, but other 

 tumours appear, the animal pining and dying of general marasmus. 

 The autopsy shows pseudo-tubercular lesions with purulent centres 

 in the lungs, liver, spleen, and lymph-glands. 



Microscopical Appearances. Small, interwoven masses of threads, 

 about 0*25 ^ thick, arranged in tufts, are present in the pus from the 

 abscesses. 



Staining Reactions. It stains by the Gram method, but is de- 

 colorized when the contact with the alcohol is prolonged ; it also stains 

 with Weigert's double stain. The spores stain with difficulty. 



Biological Characters. It is a purely aerobic organism, growing 

 best between 30 to 40 C. 



In Bouillon it forms round pellicles of a dull grey colour and oily 

 appearance, floating in the liquid with an abundant film on the surface. 



