54 INFLUENZA. 



manifestations of this fever ; and, altlioiigh objections may be 

 urged against such an artificial nomenclature, there is no 

 doubt that, merely as a matter of convenience, it is advisable 

 to regard the phenomenal exhibitions as they are presented to 

 our consideration in groups having some natural affinities. 



For this reason it will be better to vicAv the symptoms as 

 observed in — 1. The simple uncomplicated or catarrhal form. 

 2. The pulmonary or thoracic form. 8. The abdominal enteric 

 or intestinal catarrhal form. 4. The rheumatic form. 



Now, although these different manifestations may possess 

 much in common thus to associate and group them under the 

 common designation of influenza or distemper, they yet 

 possess differences great and distinctive. 



The great distinguishing peculiarities and features, which in 

 all the differing forms pervade or accompany the disease, are 

 the pyrexial symptoms invariably of a more or less marked 

 adynamic or typhoid type, great prostration and debility, with a 

 greater or smaller amount of inflammatory action of a catarrhal 

 character of the respiratory, and less often of the other mucous, 

 membranes. It is thus that we find the true catarrhal form 

 generally accompanying every development of influenza, only 

 having the other phenomena superadded. 



1. Of the Uncomplicated Respiratory Catarrhal Form. — In 

 this manifestation of the fever the constitutional symptoms 

 are in many cases only slightly marked ; the rigors or shiver- 

 ing-fits may escape observation ; the animal even continuing 

 to partake of its ordinary diet, although not so greedily. 

 There is usually sneezing ; a short, troublesome cough ; and a 

 somewhat dry or staring condition of the coat. Examination 

 of the animal will probably disclose irregular distribution of 

 the surface-temperature ; probably a little swelling over the 

 larynx, and tenderness of the throat on manipulation. The 

 conjunctival membrane is suffused, Avith it ma}'- be tears 

 trickling over the face ; redness and dryness of the schnei- 

 derian membrane, with varying elevation of internal tempera- 

 ture ; pulse frequent, and possessed of little force or volume, 

 with marked dulncss and disinclination to move. For a few 

 days these symptoms steadily increase in severity, particularly 

 the prostration and debility ; the cough deeper and more pain- 

 ful in the act, which is generally paroxysmal. The animal 



