uccessive nights, the head being covered by a cap, and washed off
each morning with hot water and soap. The patient must be cautioned
not to approach an open flame after kerosene has been put on his head.

The eggs or "nits" are next to be attacked with vinegar, which is
sponged on the hair and the fine-tooth comb plied daily for a week.
The remaining irritation of the scalp can be cured by washing the head
daily and applying sweet oil.

A simpler plan consists of drenching hair and scalp twice with cold
infusion of (poisonous) larkspur seed, made by steeping for an hour an
ounce of the seed in six ounces of hot water.

This treatment will destroy both insects and eggs. After twenty-four
hours the hair and scalp must be shampooed with warm water thoroughly.

=CLOTHES LICE.=--These insects are a trifle larger than the head lice,
being one-twelfth to one-eighth inch long, of a dirty, yellowish-gray
color, and only infesting the most filthy people. The lice are
generally only seen on the clothes, where they live, coming out on the
body only to feed. The visible signs on the body are varying degrees
of irritation from redness to ulceration, due to scratching. The
treatment is simply cleanliness of the body and clothes.

=CRAB LICE.=--The crab louse or "crab" inhabits the skin covered by
hair about and above the sexual organs most frequently, and from
thence spreads to the hairy region on the abdomen, chest, armpits,
beard, and eye lashes. Itching and scratching first call attention to
the presence of the parasites, which are even more troublesome than
the other species.

Application of kerosene to the part is sufficient to kill the lice,
but this treatment must be repeated several times at intervals of a
week, in order to kill the parasites subsequently hatched.

=FLEA.=--Flea bites are recognized by the itching caused by the poison
introduced by the insect, and by points of dried blood surrounded for
a little while by a red zone. In the case of children and people with
delicate skins, red or white lumps appear resembling nettlerash.
Generally the skin is simply covered with minute, red points, perhaps
raised a little by swelling above the surface, and when very numerous
may remotely resemble the rash of measles. Fleas, unlike lice, do not
breed on the body, but as soon as they are satiated leave their host.
Their eggs are laid in cracks in floors, on dirty clothes and similar
spots, and it is only the mature f