5l6 CLINICAL VETERINARY MEDICINE AND SURGERY. 



The temperature continuing at 40° C, the animal could not be 

 tested with tuberculin. 



Until the 25th June the condition slowly grew worse ; wasting and 

 weakness became more marked. Respiration was greatly accelerated 

 and painful. Percussion indicated dulness at several points. On aus- 

 cultation the vesicular murmur was diminished over the entire extent 

 of both lobes, and various abnormal sounds were heard, particularly 

 crepitant rales towards the end of expiration. 



On the 28th June the animal was slaughtered. 



Lesions. — The abdominal organs appeared normal, but on opening 

 the chest the surfaces of the lung appeared mammilated and bosse- 

 lated by greyish tumours. Sections exhibited a bright red ground 

 formed by the healthy pulmonary tissue, marked with circular, sharply 

 defined, whitish patches, varying in size between a sixpence and a 

 man's hand, resulting from division of the tumours. The lungs 

 weighed thirty-four pounds. The bronchial glands were only slightly 

 hypertrophied. 



The pleural cavity and heart were normal. 



On microscopic examination the tumours showed the characters of 

 round-celled sarcoma ; but bacteriological examination was carried out 

 in order to dispose of the question of tuberculosis. Numerous 

 sections were made, but no bacilli found. Four guinea-pigs were intra- 

 peritoneally injected with an emulsion formed by crushing fragments 

 of the pulmonary tumour in sterilised water. When killed five weeks 

 later they showed neither tuberculous nor sarcomatous lesions. 



These pulmonary tumours had the same naked-eye appearances as 

 the lesions in the sarcomatous form of tuberculosis, from which they 

 conld only be satisfactorily differentiated by bacteriological examina- 

 tion and inoculation. 



ROUND-CELLED SARCOMA OF THE RIGHT TESTICLE WITH 

 ENORMOUS INTRA-ABDOMINAL TUMOUR IN A HORSE. 



202. Sixteen-year-old black cart-horse ; a right monorchid. 



History. — The animal had been in the possession of a carrier for 

 twelve years, was noted for its great endurance, and had never shown 

 signs of illness prior to the last week of December, 1893. 



State on Examination. — Haggard expression of countenance ; 

 animal stood with fore and hind legs widely abducted, and showed great 

 disinclination to move. Temperature 105° F. ; pulse 65. Appetite 

 fastidious ; bowels costive. On careful search a large tumour was 

 found in the right scrotal sac ; it extended to the external abdominal 

 ring, was very firm and non-sensitive. A dose of physic was given, 

 and acted freely. On rectal examination on the following day an 

 enormous abdominal tumour was discovered, occupying the right 

 lumbar region, extending forwards to the right kidney, backwards into 

 the pelvic cavity, and downwards to the floor of the abdomen. It was 

 firmly attached to the inferior surface of the rectum. 



Prognosis was unfavourable. 



From this time onwards the animal became gradually weaker ; the 



