TUBERCULOSIS IN A COW, 469 



felt very lumpy, owing to the presence of nodules varying in size 

 between a bean and a bantam's egg. Some were cheesy throughout, 

 others contained pus. All portions of the lung were diseased, the 

 posterior and inferior borders, which were much thickened, being the 

 parts most affected. 



A portion of lung examined by Professor Dewar was yellowish 

 white in colour, the pleura thickened and opaque, the parenchyma 

 completely hepatised, or rather solidified, and requiring close and 

 careful examination to identify it as lung. At first sight it seemed the 

 product of an interstitial pneumonia. On section the parenchyma was 

 of a light salmon colour, the interlobular tissue white and in some parts 

 slightly translucent, but all completely solidified. Microscopic exami- 

 nation revealed numerous tubercle bacilli. 



Note. — This case is interesting because (i) infection appears to 

 have occurred by the respiratory tract, and not through the digestive 

 organs ; (2) the disease was confined to the lungs, not even the pleura 

 (?) being attacked; (3) because of its acuteness ; nothing was suspected 

 until the end of December, within three weeks of which date the 

 animal died. 



Prof. Dewar's case, Veterinarian, 1S9S, p. 155. 



TUBERCULOSIS IN A COW— INFLAMMATION OF THE OMASUM AND 

 ULCERATION OF THE ABOMASUM. 



166. A six-year-old shorthorn cow. 



History. — Until within three days before examination the animal 

 had appeared fairly healthy. 



State on Examination. — Symptoms of advanced pulmonary and 

 pleuritic tuberculosis, with pulmonary emphysema ; the nose was pro- 

 truded, the breathing laboured and accompanied by grunting ; the 

 chest was painful on palpation, and there was constant coughing. The 

 anterior quarters of the udder were somewhat swollen and hard, the 

 milk rather thin and slightly blue in tint. The appetite was moderately 

 good. The bowels were relaxed. Temperature io6° F. ; marked 

 jugular pulse. 



Microscopic examination of the milk failed to detect any tubercle 

 bacilli. Tuberculin gave only a slight reaction. 



The symptoms becoming aggravated, the animal was shot. 



A utopsy. — The whole of the omentum was intensely hsemorrhagic 

 and hyperaemic, the colour varying from bright red to a modena hue. 

 Every stage of tubercular new growth, from bright red villous growths 

 to yellow nodules, and even polypoid bodies were present. There was 

 little peritoneal effusion, and comparatively few tubercular nodules on 

 the peritoneum. The kidneys, liver, spleen, and pancreas were macro- 

 scopically free from tubercle, and the mesenteric glands only slightly 

 affected. 



The small and large bowels, except the caecum, were healthy ; the 

 walls of the caecum, however, were enormously thickened and inflamed, 

 and the lumen of the gut materially diminished. 



On opening the abomasum the pyloric portion showed consider- 



