INFLUENZA. 
23 
Roaring and whistling sometimes result from influenza. 
Lameness, as already indicated, is one of the results of this 
affection in exceptional cases. It is not always confined to 
the coffin joint, but attacks other joints, notably the knee. 
Chronic catarrh or nasal gleet remains after an attack of influ¬ 
enza, notably so if the mucous membrane of the sinuses of 
the head has been affected. 
Symptoms of the Catarrhal Forms. —Shivering usually 
precedes all other symptoms and lasts for a variable period of 
time, from one to six or eight hours, or even longer in some 
instances. This symptom often remains unnoticed. There is 
a dry, harsh, staring coat, the hair standing on end as it were, 
nose, ears and legs cold, with redness and at first dryness of 
the membrane (Schneiderian) lining the nasal cavities. The 
temperature is somewhat elevated; going as high as 104° F. 
(The normal temperature of the horse is 100-101° F. The 
pulse beats 34 to 40 times per minute, and the number of 
respirations is from 8 to 12 per minute). There is sneezing, 
associated with a hacking cough and shortly a discharge from 
one or both nostrils takes place. This discharge is at first 
thin, becoming thick and flaky as the disease progresses, and 
varies in color from a light yellowish, sometimes tinged with 
green, to a dark brown, and if it contains blood will be of a 
reddish color. The eyes are heavy, mucous membrane (con¬ 
junctiva) inflamed, sometimes yellow, accompanied by a dis¬ 
charge of tears which flow over the face. The symptoms 
increase in intensity for two or three days, the eyes becoming 
much inflamed, so much so that there may be imperfect vision 
or total blindness in some instances. This latter condition is 
more often present in the disease known as epizootic cellulitis 
(pink eye). Temperature gradually increases until it may 
reach 106° F. The cough now becomes deep, sonorous, pain¬ 
ful, paroxysmal, convulsing the whole body, incurring much 
distress. The pulse is feeble and easily compressed, number¬ 
ing from 50 to 80 beats per minute. The mouth hot and 
sticky. Thirst intensified, hanging of the head. Respira¬ 
tion increased, going as high as 15 to 20 per minute, or even 
more in cases where there is much exhaustion. 
