160 ANTHRAX AND ANTHRACOID DISEASES. 



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

 and often in the horse glanders and farcy conclude this morbid 

 state. 



3. Metastasis. — The amelioration of the symptoms which 

 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. 



Symptoms of AntJtrax Fever in Horned Cattle, Apoplectic 

 Anthrax, Splenic Apoplexy, Splenic Fever. 



The symptoms in the ox are very analogous to those in the 

 horse. The ox suddenly goes off its feed ; rumination is sus- 

 pended ; there are rigors and tremblings ; partial sweats bedew 

 the body, which is alternately hot and cold. The dorso-lumbar 

 region is excessively tender to pressure, and when it is the seat 

 of the tumour, very acute pain is thus caused ; the gait becomes 

 staggering, and the animal rapidly exhausted. A recumbent 

 posture is almost constantly maintained ; the animal will now 

 and then attempt to rise, but will rarely succeed in doing so. 

 When standing, the back is arched, the legs stiff and rigid, but 

 the standing posture is not long maintained. The animal looks 

 towards its flank, falls into convulsions, and expels without 

 much effort soft and bloody matter by the anus. The heart 

 beats with violence against the thoracic walls ; the pulse is 

 small, rapid, irregular, intermittent, and sometimes double ; the 

 conjunctivae red, injected, and reflect a blackish-red tint; the 

 respiration is panting and plaintive ; there is tympanitis of the 

 abdomen ; the tongue is bluish-red, and the mouth filled with 

 mucus ; blood escapes from the nose ; the eyes ai'e sunk in 

 their orbits, and tears flow over the cheeks. The areolar tissue 

 of the back and sides becomes crepitous to the touch, and the 

 animal dies during a convulsive exacerbation, or during the 

 succeeding calmness. In some animals the excitement is so 

 great that it is dangerous to go near them. The rapidity 

 with which the symptoms succeed each other is variable, death 

 taking place in the space of from a few minutes to twenty 

 hours. 



In cattle above two years old, particularly milch cows, the 

 local lesions are often confined to great congestion of the spleen, 

 and to a lesser extent of the liver and mucous membrane of 

 the intestinal canal. In other, but rarer instances, the engorge- 

 ment may be in the lungs, and should the animal survive for 

 some days, decomposition of the extravasated blood is estab- 

 lished, as expressed by foetor of the breath ; the decomposed 

 extravasated blood being absorbed into the circulation, causing 



