lOTLUENZA. 351 



and imperfect vision or actual blindness, and there is partial or 

 entire loss of appetite. The cough now becomes deep, sonorous, 

 painful, and paroxysmal, convulsing the whole body, occasioning 

 impatience, stamping of the feet, and great distress. The tem- 

 perature of the surface of the body and extremities is very 

 variable, sometimes high, sometimes low, or one leg hot, three 

 legs cold, and vice versa. The pulse is feeble and easily 

 compressed, numbering generally from sixty to eighty beats 

 per minute. The mouth is hot and clammy, and the desire 

 for water is intensified. The head is generally depressed. The 

 animal is made to move with difficulty, and when compelled, he 

 does so in an unsteady manner, swaying from side to side as if 

 partially paralyzed. This muscular debility is much increased 

 where there is great soreness of the throat and inability to 

 swallow food or drink. 



Soreness of the throat is indicated by " quidding of the food " 

 (that is to say, the food is chewed and ejected from the mouth), 

 or by its return through the nostrils. In the latter case an 

 attempt to swallow excites a violent fit of coughing, and the 

 food imprisoned behind the velum pendulum palati is forced 

 into the nasal chambers. It there tinges the mucus discharges 

 with its own colour ; and when the horse is fed on grass the 

 nasal discharge is thus turned green — a cause of great fear to 

 some people, who at once conclude that the green discharge 

 indicates something mysterious. 



The conditions of the secretions. — In the earlier stages the fseces 

 are dry, hard, pellety, and often covered with mucus ; the urine 

 high-coloured and scanty, sometimes tinged with bile, some- 

 times opaque, and sometimes of the consistence and appearance 

 of linseed oil, containing albumen, or loaded with urea and 

 hippuric acid. 



In a period of time varying from three to five days the symp- 

 toms begin to abate in intensity. The discharge from the nose 

 becomes thick, yellow, and profuse ; the cough looser, moist, 

 and not so paroxysmal ; the pulse gradually falls in number and 

 improves in tone ; the action of the heart is less jerky ; the 

 appetite improves ; the throat can now be handled without 

 causing the animal to cough. Any swelling of the throat which 

 might have been present gradually subsides, and strength la 

 generally restored in from twelve to fifteen days. 



