PRINCIPLES OF VETERINARY SURGERY 1-27 



against them, invade the body and cause such grave and 

 fatal conditions as septictemia and pyaemia. The botryo- 

 coccus and the actinomyces, are undeniably pyogenic, but 

 the pyogenesis is but a minor feature of the lesions for 

 which they are responsible, viz., the neoformations. The 

 following bacteria together with the last two are specific. 

 They are known to produce definite lesions, from which 

 they can be isolated, then cultivated, and then, when inocu- 

 lated into susceptible animals they reproduce lesions similar 

 to the original. 



I. BACILLUS MALLEI.— This specific bacterium was 



KiG. W. 

 Bacillus Mallei. (Pure Culture.) 



discovered by Shultz and Loefifler in 18&2. They found it in 

 the lesions and discharges of glandered horses. The bacillus 

 mallei is probably purely parasitic. It has never been found 

 except associated with the disease and its discharges, which 

 become desiccated upon watering troughs, mangers, har- 

 ness, wagons, neck-yokes, hitching-posts, trees in the pas- 

 ture, fences, etc., and may, even after the lapse of consid- 

 erable time, prove highly virulent to animals accidentally 

 inoculating themselves from these objects. 



Description. — Bacillus. Non-motile. _Non-f!agellated. 

 Non-chromogenic. Non-liquefying. Non-sporogenous. 

 Aerobic and facultative anaerobic. Size, 1.5 /* to 3 /x long and 

 0.25 /J- to 0.4 fj' thick. They are slightly bent and may exist in 

 the form of spheres (coccoid) or branched forms. 



