Equine Influenza. Adynamic Catarrhal Fever of Solipeds. 1 25 



germs of other diseases, which find the debilitated influenza sys- 

 tem especially open to attack. The fever which always sets in 

 early may be little above the normal in mild cases, and may 

 reach 107° or 108° F. in the more severe ones. It may last thus 

 for five or six days and then rather suddenly descend to near the 

 normal; In other cases it descends a little daily, the lowest 

 temperature for the day being seen in the morning. Shivering 

 is often nonexi.steut or passes unperceived. 



The pulse does not usually encrease in ratio with the tempera- 

 ture. It may be at first only 40 or 50 per minute, though later, 

 and especially with extensive disease of important organs, it may 

 reach 60, 70, 80 or even 100. It usually lacks in firmness and 

 force, even when the heart beats forcibly, being soft, somewhat 

 compressible, and often irregular in successive beats, the weakest 

 corresponding to the last part of the inspiratory act, or when 

 the lungs are full and the heart compressed. The heart impulse 

 behind the left elbow is usually forcible and may show variation 

 in rhythm or even intermissions. 



Mild catarrhal symptoms of the nose and throat are usually 

 present, the discharge being at first serous and later muco-puru- 

 lent. As a rule this is complicated with more or less bronchitis, 

 but this does not indicate anything serious. Acceleration of the 

 breathing, sneezing, and cough are present. Cough may be at 

 first nervous, husky and paroxysmal, but later as the discharge 

 is established it assumes a looser, mucous character. It is liable 

 to be roused by excitement, by drinking cold water, by inhalation 

 of dust, or by giving medicine. In connection with these symp- 

 toms there are some indications that the digestive organs are 

 involved. The pharyngeal and sub-maxillary glands may be 

 swollen and tender. If the subject has been seized just after a 

 full meal, there may be slight tympany, and in any case, the 

 faeces are passed in small balls, a few at a time, hard and with a 

 baked or glistening surface These may have an unusually strong 

 or heavy odor, and laxatives are liable to act with dangerous 

 energy. The urine is scanty and high colored, sometimes icteric. 



In such mild attacks, which constitute the majority, improve- 

 ment may be noted as early as the fourth day, and a prompt re- 

 covery follows. 



