180 Manual of Veterinary Microbiology. 



Bacteridian charbon. 



This is an infectious and contagious disease caused 

 by the bacteridium.* 



The disease shows itself by a profound adynamic 

 fever, with more or less marked stupor of the affected 

 animals. The blood is much changed, viscid, and the 

 plasma, loaded with the coloring matter of the cor- 

 puscles, communicates to the mucous membranes a 

 dull yellow tint ; sometimes visible hemorrrhages oc- 

 cur : nasal and conjunctival petechise, bleeding from 

 the lungs and bowels, hematuria. The intesti- 

 nal lesions in the horse often give rise to more or less 

 violent symptoms of colic, and this complication, 

 considered too exclusively, frequently interferes with 

 the diagnosis of the essential disease. 



At the autopsy the blood is found to be deoxygen- 

 ated, viscid, incoagulated, the corpuscles are altered, 

 agglutinated, and the plasma colored red. The inter- 

 nal tunic of the bloodvessels and of the heart is also 

 often stained red; petechise are found on the heart, 

 lung, pleura, and peritoneum. The spleen is much 

 enlarged ; its borders, clear cut in the normal condi- 

 tion, have become rounded ; its surface is often lumpj^ 

 its consistence soft and friable, and its meshes infil- 

 trated with extravasated blood. The intestines are 



of man is found in the blood, not cultivated ; epizootic disease 

 of grouse (Klein) in England ; epizootic pneumo-pericarditis in 

 turkeys (McFadyean) in England. — D.J 



* [The term " Bacteridium " or " la bacteridie," derived from the 

 genus Bacteridium of Davaine's early classification is retained by 

 French writers as a specific name for the bacillus anthracis. " Bac- 

 teridian charbon" or " charbon," refers to the disease produced 

 by this organism. Synonyms: anthrax, splenic apoplexy, etc. — 

 Ger. Milzbrand.— D.J 



