196 The Management and Diseases of the Dog. 



applied to the external ear, and which has also been exerted 

 upon the tumour. When the tumour becomes protruded 

 externally, it has a blood-red and pulpy appearance, and 

 its sensibility is so great that any manipulation of the 

 concha, so as to investigate the condition of the external 

 meatus, is attended with great pain, and is also often 

 followed with considerable haemorrhage. 



" The second variety of polypus growth, the chondro- 

 matous, is. that which is produced from the lining mem- 

 brane of the inner half of the tube, the dermo-periosteum, 

 and in its structure differs somewhat from the former ; it 

 is more dense, and almost cartilaginous, and usually having 

 a broad and more sessile base, occupies a greater extent of 

 the parietes of the tube. , Its surface is comparatively 

 smooth, pale, and almost insensible to the touch ; but 

 according to the extent of the ulcerative process behind 

 and within it, so will the nature and properties of the 

 discharge be with which it is accompanied. 



" Both these species of polypus of the meatus, the haema- 

 toid and chondromatous, are most commonly connected 

 with, and accompanied by, ulceration of the softer tissues, 

 or caries of the auditory process. These excrescences are 

 usually situated externally to the seat of ulceration, being 

 produced from the vascular margin of the ulcer ; and so 

 long as they are permitted to remain, the latter morbid 

 condition, the canker of the ear, will be kept up for an 

 indefinite period ; hence, should the animal be of any value, 

 it becomes a matter of considerable importance to arrive at 

 an accurate diagnosis of the actual condition of the diseased 

 parts. The symptoms, therefore, which attend the exis- 

 tence of polypoid growths of the external meatus are very 

 similar to those that indicate the chronic form of internal 

 canker of the ear. These are also preceded by those of 

 general pyrexia, which usher in the local disease, such as 

 general languor and lassitude, loss of appetite, considerable 

 thirst, turning out of the coat, and balling of the faeces. As 



