ANTHRAX. 293 



takes place in parts of the body void of hair or wool, red, brown, 

 violet, or mulberry spots of bloody effusion are seen. These 

 spots are independent of tumours and extravasations, and som.e- 

 times exist on the surface of the tumours. They are most 

 commonly seen in the pig and sheep. 



Ecchymoses are seen on the visible mucous membranes. 

 When the fever progresses slowly these spots unite by con- 

 fluence, and surround, notably in the pig and sheep, the whole 

 body. Some of them become crepitous and emphysematous ; 

 others take the form of tumours, passing rapidly to the state of 

 gangrene. In addition to these eruptions, there is often a sore- 

 ness and swelling of the throat, infiltration of the upper end of 

 the trachea, and a discharge of a lymph -like material from the 

 nostrils, constituting what is termed gloss-anthrax, common in 

 the pig which was fed upon anthrax flesh. It is also seen in the 

 ox as well as the horse. 



Clmrbonous tumours are generally of a black-brown colour. 

 The phlyctenfe are filled with a brown liquid, which is very 

 irritating; it sweats on the surface as drops of cold serosity. 

 The tumours have little tendency to suppuration, and speedily 

 become gangrenous. If these symptoms are added to those 

 furnished by the mucous membranes, no difficulty need be felt 

 in diagnosing charbonous tumours, phlegmonous and gangrenous. 



Terminations. — When the tumours resist mortification, they 

 terminate by delitescence, by suppuration, and by metastasis. 



1st. BcUtcscencc. — The morbid products are ef!used, and con- 

 stitute tumours, which are reabsorbed and expelled by the 

 excretory organs. Examples of this kind of termination have 

 been observed by veterinarians in Africa. 



2d. Suppuration. — When the tumours progress in a slow 

 manner, indurating gradually, suppuration may be brought 

 about by therapeutic and surgical means. Eesolution is slowly 

 induced, and it is not without pain that the necessary suppuration 

 can be provoked. The animals remain poor and unthrifty, and 

 often in the horse glanders and farcy conclude this morbid state. 



od. Metastasis. — The amelioration of the symptoms wdiich 

 succeed the development of tumours is not often lasting. The 

 products are reabsorbed and carried anew into the circulation. 

 This unhappy crisis is announced by the reappearance of all the 

 symptoms proper to charbonous fever ; their succession is so 

 rapid that death may take place in from eight to ten hours. 



