SYMPTOMS 503 



with considerable tenesmus usually occurs The feces are 

 of a thin, pulpy and even fluid consistence and sometimes 

 have a fetid odor. At the beginning of the attack the urine 

 is alkaline but it becomes acid when the intestinal lesions are 

 developed. It rarely contains albumin but desquamated epi- 

 thelial cells of the bladder are often present in large quantity. 



A severe affection of the eyes is quite a constant charac- 

 teristic symptom of influenza. At first it consists chiefly of a 

 catarrhal and later of a phlegmonous conjunctivitis with con- 

 siderable swelling of the eyelids, which may be followed by 

 keratitis and possibly by an exudative or hemorragic iritis. 

 Usually both eyes are affected. The first indications are the 

 presence of tears, intolerance of light, intense hyperemia of 

 the conjunctiva and contraction of the pupil. The eyelids 

 swell, are hot, painful and kept more or less continually 

 closed. A gray, muco-purulent secretion accumulates be- 

 tween the eyeball and eyelids and the eyeball becomes very 

 sensitive to pressure. The cornea, which at the beginning of 

 the keratitis has a greasy lustre, first becomes iridescent, but 

 later in the course of the disease it may be opaque. It is con- 

 siderably injected with blood at its edge ; the iris becomes 

 swollen and yellowish in color. Often these inflammatory 

 changes of the eye disappear in a strikingly short time. 



During the further progress of the disease, swellings 

 appear on the extremities, sheath, epigastrium and lower part 

 of the chest. It may be concluded that these swellings are 

 due to edema caused by passive congestion. Less frequently 

 the swellings are of an inflammatory nature. The swelling of 

 * the extremities causes the gait to be stiff and un wieldly. In- 

 flammation of the sheaths of the tendons is sometimes observed. 



The respiratory mucosae are congested. At first there is 

 a serous and, later on, a muco-purulent discharge from the 

 no.se, slight swelling of the submaxillary glands, moderate 

 acceleration of respiration and a cough. As a rule the animal 

 becomes emaciated during the course of the disease. Pregnant 

 mares may abort. 



In certain cases complications may arise, such as cardiac 



