146 FEVERS. 



disease. On other occasions, the disorder commences with 

 vertigo — the brain is attacked — so when the animal is 

 walked out he staggers, and can hardly keep his legs. A 

 common accompaniment of influenza is swelled legs. In 

 all cases, it is marked by early and rapid debility. 



Sequels. — The ordinary consequence of influenza is 

 disease either of the lungs, or of their investing membrane. 

 In many cases, especially when protracted, while we are 

 expecting the animal to rally, the disorder will insidiously 

 fasten on the lungs, and without giving any notice, until 

 all at once the respiration becomes disturbed. The insi- 

 dious manner in which lung-disease supervenes on influenza, 

 and consummates its ravages (although no motion of the 

 flanks may be discoverable), we shall best discern by slowly 

 and steadily watching the nostrils, which will softly but per- 

 ceptibly be agitated, and evidently indicate disturbance or 

 difficulty in the breathing. And at this stage of the disease, 

 such a symptom is of vast importance — one that announces 

 to us a fearful secret. 



The most perilous form of this insidious pulmonary acces- 

 sion is — pulse a hundred or thereabouts, and no abatement 

 in its frequency produced by bloodletting or by medicine. 

 Despondency of countenance, and general dejection continue 

 throughout. Prolonged loathing of food, and now, perhaps, 

 of water also. Cold skin and extremities ; or else one leg 

 warm, another cold. No lying down; or if lying at all, 

 only a short and unsatisfying rest. The animal soon rising 

 again, and standing for hours together in one place and 

 posture, with his fore legs partially extended outwards from 

 each other, to strengthen the body^s support. Blisters, rowels, 

 or setons not swelling, dry at their orifices ; or else issuing 

 on pressure but a little thin, bloody, watery discharge ; at 

 other times an opaque, dirty, whitish fluid, of an unhealthy 

 purulent character. If an aged horse, purulent discharge 

 (in some cases mingled with blood) from the nose, with a 

 most off'ensive odour. The saliva likewise has an extremely 

 disagreeable smell. 



In aged horses, where the respiratory apparatus is un- 



