18 



skin becomes tender and appears very pale over the udder and other 

 parts not covered with hair. The eyes are dull and sunken in their 

 orbits because of the wasting away of the fatty cushions upon which 

 they rest. The cough grows more frequent, but it is seldom accom- 

 panied by any nasal disciiarge. The animal becomes more and more 

 emaciated, notwithstanding the fact that the appetite may be good 

 and the food of the best quality, and supplied in abundance. As 

 these changes go on, the quantity of milk diminishes in milch cows, 

 and the animal has a general unhealthy appearance. 



There is sometimes an unusual sensitiveness and flinching exhib- 

 ited when the sides of the chest or the breast are pressed, and this sen- 

 sitiveness is sometimes present from the very commencement of the 

 disease ; and in the more advanced stages, the animal tries to avoid 

 the pressure, or indicates the suffering it causes by groans. The 

 disease may nevertheless be present without these symptoms. 



Nymphomania is also occasionally observed in tuberculous cows. 

 In this case they exhibit all the symptoms of being in heat, as inqui- 

 etude, indocility, etc., but as nymphomania sometimes occurs in other 

 diseases, it cannot be regarded as positive evidence of the presence 

 of tuberculosis. 



When the lungs are diseased with tuberculosis, the movements of 

 the ribs and wings of the nostrils are normal, unless the disease is in 

 a very advanced stage ; but if the animal is forced to move quickly, 

 the breathing becomes laborious or disturbed. In cases where the 

 disease is not so advanced, the difficult breathing is scarcely noticed 

 during repose ; but if the lining of the thorax (pleura) is affected, it 

 is more apparent and ma}' be so pronounced as to assume the abdom- 

 inal character. When this occurs there is more than ordinary sensi- 

 tiveness exhibited on pressure, especially above and behind the 

 shoulders, along the back and in the costal region. 



I would add that when the tubercles are on the membranes of the 

 brain, the animal is liable to have a stiff neck or carry its head to one 

 side. When the disease is located in the liver, spleen, mesenteries or 

 other organs, the animal will give more or less evidence of suffering 

 in these organs, or may flinch and give other evidences of pain when 

 the parts over the affected organ are pressed. The presence of nym- 

 phomania undoubtedly indicates a diseased condition of one or both 

 of the ovaries, and this might be sufficient to destroy the ova and 

 cause sterility. When the disease attacks the udder it frequently 

 causes a very diffuse painless swelling of a portion of the organ, 



