orks more than natural; both the fore feet
and elbows may be turned out; during the onset of the attack the animal
may be restless and act as if he had a slight colic; he may even lie
down, but does not remain long down, for when he finds no relief he soon
gets up. After effusion begins these signs of restlessness disappear.
Every movement of the chest causes pain; therefore the cough is
peculiar; it is short and suppressed and comes as near being no cough as
the animal can make it in his desire to suppress it. The breathing is
hurried, the mouth is hot, the temperature being elevated from 102 deg. or
103 deg. to 105 deg. F. Symptoms that usually accompany fever are present, such
as costiveness, scanty, dark-colored urine, etc. The pulse is frequent,
perhaps 70 or more a minute, and is hard and wiry. The legs and ears are
cold.

Percussion is of valuable service in this affection. After effusion
occurs the sound produced by percussing over the lower part of the chest
is dull. By striking different parts one may come to a spot of greater
or less extent where the blows cause much pain to be evinced. The animal
may grunt or groan every time it is struck. Another method of detecting
the affected part is to press the fingers between the ribs, each space
in succession, beginning behind the elbow, until a place where the
pressure causes more flinching than at any other part is reached.
Auscultation is also useful. In the first stage, when the surfaces are
dry and rough, one may hear, immediately under the ear, a distinct sound
very much like that produced by rubbing two pieces of coarse paper
together. No such friction sound occurs when the membrane is healthy, as
the natural moisture, heretofore mentioned, prevents the friction. In
many cases this friction is so pronounced that it may be felt by placing
the hand over the affected part. When the dry stage is succeeded by the
exudation of fluid this friction sound disappears. After the effusion
into the cavity takes place sometimes there is heard a tinkling or
metallic sound, due to dropping of the exudate from above into the
collected fluid in the bottom of the cavity, as the collected fluid more
of less separates the lung from the chest walls.

Within two or three days the urgent symptoms may abate owing to the
exudation of the fluid, and the subsidence of the pain. The fluid may
now undergo absorption, and the case may terminate favorably within a
week or 10 days.

If the