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Microbic Diseases LuUvidually Considered. 255 



of these animals ; transmission to the lion, dog, and 

 goat has also been observed as a result of spontane- 

 ous contamination. 



The disease is acute or chronic ; it is always acute 

 in the ass and mule, as well as in the lion.* 



Microbe. — The bacillus mallei is a slender, motile 

 rod, straight or slightly curved, and with rounded 

 ends. It measures 2/i to 5/z in pj^ ^^ 



length by 0-5/i to 1-5/^ in thick- V^**^ /v- 



ness, hence it is thicker than the ^ -k >r> 



Koch bacillus, but of the same ^^ >$n ^ 



length. When stained it shows y ^ yigx 



alternating clear and colored ^ ^ uJSk^" 

 spaces which give it a granular ' /xc^ 



, IT j-i- i. J? j-i +., Bacillus mallei. X 



aspect recalling that of the tu- ^^^^^ From a photo- 



bercle bacillus. Rosenthal re- micrograph. (Frankel 

 gards these clear spaces as spores ; and Pfeifer.) — From 

 others, however, basing them- Sternberg's Bacteriol- 

 selves on the shght resistance of °^^' 

 the bacillus to heat, refuse to admit the existence of 

 spores. (1) 



The glanders bacillus is aerobic; it occurs in the 

 pathological secretions — nasal discharge, pus of ul- 

 cers ; and in the specific lesions — farcy buds, tuber- 

 cles, glanderous ulcers, and inflammation of the cor- 

 responding lymphatic vessels and glands, etc. It is 



(1) Babes has shown that such granules are present in the ma- 

 jority of bacilli, even the least resistant, and that they do not 

 possess the resisting power of true spores. He believes that they 

 exercise the same function in the multiplication of bacilli as the 

 chromatic part of cell-nuclei in the division of cells. 



* [The sub-acute or chronic form of the disease seems to be not 

 uncommon in mules in the Southern States. — T).] 



