CONTAGIOUS DISEASES. 



823 



Bkck leg or bloody murrain is not typical anthrax, but is anthracoid, 

 with a special germ as the aetive principle of the virus, cheracterized by 

 engorgment of a quarter or a leg, shoulder or a side. It usually occurs 

 <tmong yonng, fast growing, thriving cattle, and is so sudden in its attack, 



short in its duration, and fatal in its 

 effect, that one or two of a herd may 

 be found dead in the morning, when 

 nothing whatever was wrong with them 

 the night before. There is a stiffness 

 in the affected quarter, with some dif- 



CARBUNCULAR ERYSIPELAS- 

 LEG OR QUARTER ILL 



fuse swelling and heat, fever, and an 

 appearance of plethora; the swollen quarter soon mortifies, becomes cold, 

 gas forms under the skin and crackles if rubbed, and death soon follows. 

 Sometimes there is an effusion of yellow looking lymph from the swelling. 

 Recovery is very rare, and is slow and tedious, and the swelling is apt to 

 slough extensively and form sluggish, unsightly sores. 



The black tongue is seen in cattle; and sometimes in horses, and is known 

 by red purple or black blisters on the tongue, palate and cheeks, some- 

 times attaining the size of a hen's egg; they burst and run an ichorous, 

 scalding matter, and the sore becomes unhealthy and ulcer-like, with more 

 or less swelling; the discharge, as it runs from the mouth, is bloody; the 

 fever runs very high, the system becomes poisoned throughout, and death 

 ensues in twenty to forty-eight hours. 



Carbuncular erysipelas or braxy in sheep corresponds to black leg in 

 cattle, and, like it, always attacks the finest, fattest and most thriving one 

 in the flock. The symptoms are the 

 same as in black leg, and death follows 

 in from ten to sixty hours. 



Swine have the carbuncular erysipe- 

 las the same as sheep; also, black tongue, 

 tumors about the throat, and pharyn- 

 geal anthrax; the latter is the most 

 common form, and is probably caused 

 by eating the carcass of some anthrax 

 animal. There is fever, swelling about 

 the throat, neck and breast, which is 

 red, shining, tender, and soon becomes purple, cold and insensible, and 

 pits upon pressure; nausea, vomiting, retching, and loss of appetite; pur- 

 ple patches form around the eyes and on the snout; breathing becomes dif- 

 ficult, and the month livid; the temperature falls, and death follows in 

 from one to two days. 



Dogs, cats and other small animals die from anthrax, developed in th** 



GLOSS-ANTHRAX OR BLACK TONGUE. 



