3Iicrobic Diseases Induidualhj Considered. 181 



sometimes the seat of intense congestive and hemor- 

 rba^^ic lesions, and in some cases the lymphatic glands 

 of the different resfions are in the same condition, and 

 also enlarged to twice or three times their normal 

 size. Similar lesions may also be found in the kid- 

 neys, meninges, etc. 



The species which are liable to contract the spon- 

 taneous disease are the sheep, goat, ox, and horse; this 

 last less readily becomes infected than the first ; it can 

 consume with impunity foods which occasion the dis- 

 ease in the others. Charbon is also met with in the 

 carnivora of menageries (lion) when they are fed with 

 the flesh of animals which have died of this disease. 

 Exceptionally the dog and the jpig become infected in 

 the same way. Algerian sheep are refractory even 

 when they are born in other countries. 



Man is unfortunately also liable to contract this 

 disease; the latter then receives different names ac- 

 cording to the mode of penetration of the bacteridiiim 

 and the initial lesion which it determines : 



1st. Malignant pustule, the most frequent form, con- 

 secutive to the accidental insertion of the virus into a 

 cutaneous wound, develops in workmen who cut up, 

 dress, or retail charbonous meat. 



2d. Pulmonary charbon, the rarest form, develops in 

 consequence of the inhalation of dust charged with 

 the bacteridia, or rather with their spores, in work- 

 men who handle wool or skins comins: from the bod- 

 ies of charbonous subjects. 



3d. Intestinal charbon, consecutive to the consump- 

 tion of charbonous meat. 



Characters of the bacteridium. — The microbes of 

 charbon are straight, cylindrical rods; they are iso- 



