214 The Management and Diseases of the Dog. 
fine granular structure, and having a bright yellow colour 
like sulphur. They affect a remarkable disposition ; their 
contour, sometimes very circular, at other times more or 
less notched, forms a slight prominence that rises a little 
above the surrounding skin ; their centre is, on the con- 
trary, to a greater or less degree concave: the conforma- 
tion that gives the crust the aspect of a cup. 
“ These capsules, or favz, are more or less numerous, and 
more or less extensive. At the free surface of the crusts 
there are often found dry, bristly hairs that appear to pass 
through the entire thickness of the favus mass, and are 
easily pulled out. Ata later period, these hairs are shed 
from the follicles—not broken off, or sharply cut away 
close to the crusts, as in Tzmea tonsurans. 
“Tf the crusts are carefully removed, the skin beneath is 
observed to be thin and depressed, and looking as if atro- 
phied by compression; but smooth, not ulcerated, and 
either quite dry and moist from serous exudation ; sometimes 
itis pale and anemic; but more frequently red, irritated, 
and sufficiently transparent to show some very fine blood- 
vessels. Around the margin of the crust the skin is sensibly 
inflamed, red, thickened, and rises intoa somewhat salient 
prominence. Inthe dog there is much pruritis: a symptom 
which is rarely noticeable in the cat ; otherwise, it does not 
appear to exercise any prejudicial effect on the general 
health. 
“ Another form is that in which the plant is found in 
depressions on the surface of the skin, forming the yellow 
honeycomb-like masses which gave the name ‘ favus’ to 
the disease, and which, from their being frequently buckler- 
shaped, suggested the term ‘scutulata.’ A. cuticular 
elevation is seen, beneath whichisasmall favus. Generally 
there is no pus or fluid of any kind ; the fungus grows, and 
the cuticle above it, supposing it to have become forcibly 
detached, finally separates, leaving the favus exposed.”* 
* Fleming's “Veterinary Sanitary Science,” vol. ii. pp. 474, 475. 
