PRINCIPLES OF VETERINARY SURGERY 135 



micro-organism of actinomycosis, is a pathogenic parasite, 

 aerobic and facultative anaerobic, ilon-motile, non-flagellat- 

 ed, and non-sporogenous, pyogenic microbe belonging to the 

 higher bacteria. The ray fungus is a parasite of vegetables, 

 particularly the beards of cereals. Johne and Brazzola found 

 it on barley and it is known to produce disease only through 

 abrasions made by or contaminated with such substances. 

 It was first observed by Langenbeck in 1845, t>ut was only 

 definitely proven to be the specific microbe of actinomycosis 

 by Bollinger, in 1878. (For detailed description see chapter 

 on Actinomycosis, Part II). 



Fig. 12. 

 Tetanus Bacillus from Pure Culture. 



4. BACILLUS TUBERCULOSIS is the specific mici-o- 

 organism producing the well-known disease — tuberculosis, 

 which in the words of McFarland "is no respecter of persona 

 but affects alike, the young and the old, the male and the fe- 

 male, the rich and the poor, the enlightened and the savagt 

 the human being and the lower animals." Tuberculosis no 

 only affects mammals, but is found also in fishes, birds, rep 

 tiles and batrachians. Wild animals in captivity are ver 

 susceptible, but seem to escape it in the wild state. It wa 

 discovered by Koch in 1882. 



Description. — No.n-motile. Non-flagellated. Non-sporo 

 genous. Non-chromogenic. Non-liquefying. Distinctlj 

 aerobic. Highly pathogenic. Purely parasitic. It occ n: 



