fleece does not dry out. Insect powder may be dusted into the fleece when
it is impossible to dip the animal.

A very satisfactory treatment for lousiness in _dogs_ and _cats_ is to wash
them with carbolized soap. We should wait a few minutes before rinsing off
the soapy lather and drying the coat.

A number of different remedies are used for the treatment of lousiness in
_poultry_. Dust baths and insect powder are recommended. Ointments are
commonly used. One part sulfur and four parts vaseline, or lard, may be
made into an ointment and applied to the head, neck, under the wings and
around the vent. Mercurial ointment may be applied to the margin of the
vent. Neither of them should be used for destroying lice on young chicks.
Mercurial ointment should be used very carefully because of its poisonous
effect. Lard may be used for destroying lice on young chicks. Crude
petroleum may be sprayed among the feathers by a hand-sprayer, while the
fowls are suspended by the feet.

[Illustration: FIG. 66--Sheep-tick.]

None of the disinfectants and oils recommended for dipping and washing
lousy animals destroy the nits. This makes it necessary to re-treat the
animal in from eight to ten days after the first treatment.

THE SHEEP-TICK.--This is not a true tick. It resembles a fly more than it
does a tick, and its right name is _Melophagus ovinus_ (Fig. 66). Louse-fly
is a better name for this parasite than tick, as its entire life is spent
on the body of a sheep. The general color of the body is brown. The legs
are stout, covered with hair and armed with hooks at their extremities. The
mouth parts consist of a tubular, toothed proboscis with which the parasite