OF VETERINARY MEDICINE. 85 



most cases; with the ear at the nostrils a metalhc iinkle can be 

 heard, although this tinkle is not diagnostic. But it is not heard 

 in pneumonia nor in bronchitis. It is a mucous rattle in the 

 bronchi, and is very pronounced. 



As the dyspnoea increases the mucous membranes get darker 

 — become cyanotic. The horse dies from asphyxia. 



Hydrothorax may be single or double the same as pleurisy. 

 In the mediastinum are cribiform openings through which the 

 fluid can pass from one side to the other. In many cases these 

 openings become plugged up. In such a case the hydrothorax 

 is confined to one side. If the water does not fill the chest more 

 than one-third full, the fluid can become absorbed and the animal 

 recover. If the inflammation subsides during the first half of 

 the third stage the horse makes a rapid and complete recovery, 

 but if the plastic exudate instead of softening forms adhesions, 

 the lungs grow to the ribs. 



Symptoms of Pleural Adhesions. — After a horse has made an 

 apparently good recovery and is put to work again, say he goes 

 out driving, when he feels the sudden pain, stops, puts his nose 

 to one side — and forgets all else. He may turn into the ditch, 

 and then go on. This act is due to a stitch in his side, a dis- 

 turbance of the circulation around the adhesion, and it produces 

 sharp, lancinating pain. The animal does this once and then 

 again. He is a good horse to get rid of. 



Treatment of Pleurisy.— U the doctor is called during the 

 chill, he must treat that symptom until he can make a diagnosis 

 as to whether the case is one of pneumonia, pleurisy, etc. Sup- 

 pose now you have a carriage horse which has had to stand some 

 time after a long drive and upon returning home and going to 

 the stable he soon begins to hang his head, paws around, gets 

 up and down, etc. The coachman gives him colic medicine but 

 it does no good. Upon observing the respirations, you see that 

 they are made with care ; the animal has a temperature of 105-6 ; 

 his pulse is 50. He has pleurisy. Adopt heroic measures to 

 abort the trouble ; and pleurisy is easily aborted. Put the horse 

 on acetanilid and a fever mixture containing aconite. Apply 

 local stimulants — the ;ammoniacal Hniment, the white sprain 

 liniment, or a sinapism. The value of the external stimulation 



