flock, to mix with the healthy birds.

_The predisposing causes_ are very important factors in the development of
roup. Cold, damp, draughty, poorly ventilated poultry houses cause the
disease to spread rapidly and become highly acute.

_The symptoms_ differ in character in the different outbreaks of the
disease. Usually the first symptoms noticed are sneezing, dulness,
diminished appetite and a watery discharge from the nostrils and eyes.
Later the eyelids may become swollen and the nostrils plugged by the
discharge from the inflamed membranes. If the mouth is examined at this
time, an accumulation of mucus and patches of diphtheritic or false
membranes are found. In the acute form of roup the false membranes and
yellowish, cheesy-like material accumulate on the different mucous
membranes, and interfere with vision, breathing and digestion. The affected
bird becomes thin and weak. The death rate is very high in this form of the
disease.

_The preventive treatment_ consists in quarantining birds that have been
purchased from other flocks, and that have been exhibited, for a period of
three weeks. A careful examination of the mouth should be made. If a
catarrhal discharge from the nostrils and false membranes is present,
prompt treatment should be used. A sick bird should be held in quarantine
for several weeks after it has recovered, and receive a thorough washing in
a two per cent water solution of a cresol disinfectant before allowing it
to mix with the healthy birds.

The medicinal treatment consists in removing the discharges from the
nostrils and eyes with pledgets of absorbent cotton that are soaked with a
four per cent water solution of boric acid. Among the common treatments