196 The Management and Dtseases 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 hemorrhage. 
“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 hama- 
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 thediseased 
parts. The symptoms, therefore, which attend the éxis- 
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 feces. As 
