560 CLINICAL VETERINARY MEDICINE AND SURGERY. 



In order to convey a better idea of the seat and appearance of the 

 lesions we very briefly summarise these observations. 



I. Tuberculous Lesions of the Skin and Appendages. 



Case i. A green parrot bought in April, 1886. In December, 1894, 

 a little greyish, firm, scaly swelling was noted on the right side of the 

 face. It gradually extended to subjacent parts, becoming more 

 prominent. 



On the ist January, 1895, this tumour was removed by a veterinary 

 surgeon. A fortnight later it returned. 



On the 19th January the parrot was brought here. The right side 

 of the face showed a greyish, conical, scaly vegetation, slightly incurved 

 at its extremity. Examination of a scraping from the inflamed skin 

 around the base of the growth revealed numerous bacilli. 



The tumour was removed, the skin curetted and touched with the 

 thermo-cautery. 



The parrot was brought back again on the 12th February, 1895. 

 The horny mass had again grown, and another swelling was in 

 course of formation above the former. The same treatment was 

 repeated. 



On the 2nd March both growths had returned, and a fresh one 

 had appeared between the skin and the upper mandible. 



Case 2. A parrot, the globe of whose eye was almost entirely 

 covered by the lower eyelid, which formed a fungating swelling the size 

 of a haricot bean ; the central portion was caseous, and contained 

 bacilli. 



Case 3. A parrot with a tuberculous horny growth developed on 

 the right side of the head immediately behind the buccal commissure. 

 Brought back again a month later it showed other small horny growths 

 close to the first. 



Case 4. A parrot showing a large horny growth below the lower 

 mandible ; the surface of implantation occupied half the depth of the 

 head ; this horn was pyramidal in shape ; the anterior side measured 

 one and a half inches in length ; it was hard, fragile, and stony in 

 appearance. Two similar growths the size of hemp-seeds existed in 

 front of the left eye. 



Case 5. A four-year-old parrot, imported from Brazil at the age of 

 three months. For some time this bird, previously very talkative, 

 had appeared dull and quiet. A horny growth, the size of a small 

 hazel-nut, existed on the right cheek, behind the base of the 

 mandible. 



