trils, and face. It is attributed to some irritant
substance contained in the mother's milk. Impetigo is also witnessed among
grazing animals, regardless of age, and it especially attacks animals with
white hair and skin. The mouth, face, and limbs become covered with
pustules, which may rupture in a few hours, followed by rapid and
successive incrustations; the scabs frequently coalesce, covering a large
surface; pus may form under them, and thus the whole thickness of the skin
become involved in the morbid process. This form of the disease is
attributed to the local irritant properties of such plants in the pasture
as St. John's wort (_Hypericum perforatum_), smartweed (_Polygonum
hydropiper_), vetches, honeydew, etc. Buckwheat, at the time the seeds
become ripe, is said to have caused it; also bedding with buckwheat straw.

_Treatment._--Sucking calves should be removed from the mother, and a
purgative given to the latter to divert the poisonous substance secreted
with the milk. When the more formidable disease among grazing cattle
appears, the pasturage should be changed and the affected parts of the
animal thoroughly anointed once a day with sweet oil containing 2 drams of
carbolic acid to the pint. This should be continued until the crusts soften
and begin to drop off, then the parts may be cleansed thoroughly with warm
water and soap. Subsequently the white precipitate ointment or carbolized
cosmoline should be applied daily until the parts are healed.

PEMPHIGUS (WATER BLISTERS).

This is an inflammatory disease of the skin, characterized by successive
formations of rounded, irregularly shaped water blisters, varying in size
from a pea to a hen's egg.

_Causes._--Obscure.

_Symptoms._--The formation of a blister is preceded by a congestion or
swelling of the skin. Yellowish-colored water collects beneath the cuticle,
which raises the latter from its bed in the form of a blister. The blisters
appear in a succession of crops; as soon as one crop disappears another
forms. They usually occur in clusters, each one being distinct, or they may
coalesce. Each crop usually runs its course in a week. The disease is
attended with itching or burning sensations which cause the animal to rub,
thereby frequently producing excoriations and formation of crust on the
affected region.

_Treatment._--Give a tablespoonful of the following-described mixture in
feed twice a day: Saltpeter, cream of tartar, and sulphur, equal pa