224 MANGE. 
upon different spots. As they mature, the point of each contains a 
very slight quantity of gelatinous fluid; the vesicles ultimately burst; 
the contents exude and become dry through the absorption of the atmo- 
sphere, forming incrustations upon the surface. Add to this, the irrita- 
tion provokes the diseased animal to scrub itself against any irregular, 
projecting surface which may be at hand. Raw places, frequently of 
magnitude, are often occasioned by the friction so rudely applied; from 
this source another set of crusts spring up. The places which are 
denuded, therefore, may present a very varied aspect, but still the parched 
appearance of the scurfy and dry skin affords the best external evidence 
of the presence of mange. 
An animal, which from being gray in youth has grown white with age, 
A MANGY PIECE OF SKIN. THE HEAD OF AN OLD, MANGY WHITE HORSE. 
still retains to its death the signs of its youthful color upon its skin. 
The integument is dark, although the hair may have lost the last vestige 
of its original hue; the checkered appearance established by mange 
gives to the white horse a particularly ragged and dejected aspect. 
Unfortunately, man is not, at the present moment, sufficiently enlight- 
ened to recognize the 
symptoms which indi- 
cate an approaching at- 
tack of mange; but the 
animal energetically an- 
nounces the malady so 
soon as the contami- 
nation is established. 
The disorder being con- 
firmed, its existence is 
readily ascertained ; the fingers have only to be inserted among the roots 
of the mane, and the part titillated with the nails. The horse thus 
treated will stretch forth the head and neck, will compose its features 
THE TEST FOR MANGE. 
