e infected, producing a swelling and inflammation.
The infected sheep run, scratch and bite themselves. When these ticks
become developed in large quantities, they produce a paleness of the
mucous membranes of the eyes, mouth and nose, as the ticks suck large
quantities of blood, which produces an anemic condition. The sheep
become poor, weak and unthrifty.

TREATMENT: Satisfactorily treated by dipping infected sheep in Coal Tar
dips or Emulsions of Crude Petroleum. Shearing the sheep has a good
effect, but care must be exercised as the ticks then rapidly migrate to
the lambs.

DISEASES OF POULTRY

Causes, Symptoms and Treatments

[Illustration: Photograph of several chickens.]
White Plymouth Rocks, Raycroft Farm, Adrian, Mich.

CHAPTER V

AIR SAC MITE

CAUSE: Produced by a parasite called Cylodites Nudus, which bears a
close resemblance to the parasite causing mange or scabies in the
domesticated animal. Owing to the peculiar construction of their
breathing organs fowls are more susceptible to parasites than animals.
In addition to affecting the lungs, the Air Sac Mite may extend its
operations to the intestines, kidneys, liver and bones.

SYMPTOMS: Unthriftiness is first noticed, but after the parasites become
numerous, the fowl shows signs of difficult breathing, perhaps
terminating in bronchial pneumonia. In some cases death occurs without
apparent cause. The bird will be inactive, becomes separated from the
rest of the flock, comb pale, head drawn close to the body, wings hang
pendulous, lose flesh, breathing becomes hard, coughing, sneezing and a
rattling from the mucus in the windpipe is heard. Death is produced from
suffocation.

TREATMENT: Separate the sick from the healthy fowls. Disinfect coops and
runways of both sick and healthy birds with Crude Carbolic Acid,
undiluted. Also fumigate the fowls in their coops with steam from hot
water and Pine Tar. This may be done by placing the water and Tar in a
pan and then inserting a hot stone or brick in the solution. This
perhaps is the simplest method of fumigation. Also mix Sulphur in their
feed regularly.

APOPLEXY

(Hemorrhage of the Brain)

Due to the rupture of a blood vessel of the brain and pressure from the
escaping blood.

CAUSE: Mechanical injuries, straining when laying eggs (hens are
frequently found dead on the nest from this cause), overfeeding,
stimulating food, etc., all tend to produce apoplexy.

SYMPTOMS: A