ter. The same remarks apply to the effects of the
poison ivy and poison sumac.

_Treatment._--In papular eruption first remove the cause, then apply the
same general remedies as for simple congestion. In the more inveterate
cases use a lotion of one-half ounce sulphid of potassium in 2 quarts of
water, to which a little Castile soap has been added, or use a wash with
one-half ounce oil of tar, 2 ounces Castile soap, and 20 ounces water.

INFLAMMATION WITH BLISTERS, OR ECZEMA.

In this the skin is congested, thickened, warm (white skins are
reddened), and shows a thick crop of little blisters formed by effusions
of a straw-colored fluid between the true skin and the cuticle. The
blisters may be of any size from a millet seed to a pea, and often crack
open and allow the escape of the fluid, which concretes as a slightly
yellowish scab or crust around the roots of the hairs. This exudation
and the incrustation are especially common where the hairs are long,
thick, and numerous, as in the region of the pastern of heavy draft
horses. The term eczema is now applied very generally to eruptions of
all kinds that depend on internal disorders or constitutional conditions
and that tend to recurrences and inveteracy. Eczema may appear on any
part of the body, but in horses it is especially common on the heels and
the lower parts of the limbs, and less frequently on the neck, shoulder,
and abdomen. The limbs appear to be especially liable because of their
dependent position, all blood having to return from them against the
action of gravity and congestions and swellings being common, because of
the abundance of blood vessels in this part of the skin and because of
the frequent contact with the irritant dung and urine and their
ammoniacal emanations. The legs further suffer from contact with wet and
mud when at work, from snow and ice, from drafts of cold air on the wet
limbs, from washing with caustic soaps, or from the relaxing effects of
a too deep and abundant litter. Among other causes may be named
indigestion and the presence of irritant matters in the blood and sweat,
the result of patent medicated feeds and condition powders (aromatics,
stimulants), green food, new hay, new oats, buckwheat, wheat, maize,
diseased potatoes, smut, or ergot in grains, decomposing green feed,
brewers' grains, or kitchen garbage. The excitement in the skin, caused
by shedding the coat, lack of grooming, hot weather, hot, boiled, or
steamed fee