AND HIS DISEASES. 141 



Calomel, . . . . . 1 scruple, 



Powdered opium, . . • . .1 scruple, 



to be given every three hours, until four doses are given. 

 When water has formed in the chest, (hydrothorax), stimu- 

 lants, tonics, and diuretics must be given, as a pint of warm 

 ale, combined with one ounce of nitrous ether three times a 

 day, blisters applied to the, sides, and the iodide of potassium 

 in one drachm doses twice a day. Feed the animal on nutri- 

 tive and easily-digested food. When a large accumulation 

 of fluid takes place it must be removed by tapping (paracen- 

 tesis thoracis.) (See Operations, page 197.) 



Bronchitis; " or inflammation of the miicc/us membrane 

 of the bronchial tubes," is often associated with inflamma- 

 tion of the lungs, but also occurs as a separate afi"ection. 



Causes. — Are similar to other pulmonary diseases, and is a 

 result of laryngitis or catarrh ; or it may depend on atmos- 

 pheric influences, and in those cases it is always accompanied 

 with great weakness and prostration. It sometimes follows 

 the careless administration of medicines, whereby it passes 

 into the windpipe (trachea) and descends to the bronchial 

 tubes, setting up, great irritation. 



Symptoms. — The first symptom often observed is a short, 

 dry, and husky cough, speedily becoming more prolonged. 

 When a horse gives a natural cough he opens his mouth a 

 little, but when labouring under this disease he keeps his mouth 

 close trying to suppress the cough. As the disease advances 

 the mouth becomes hot and dry, the ears and extremities 

 alternately hot and cold, _the_p ulse not hard and wiry as in 

 pleu jsy, b ut soft and compressible, and th e respirations are 

 q uick and hollow ; the ear applied to the breast can easily 

 detect a ^rattling_^ound, the bowels are inactive, and his 

 appetite is gone. Death may occur in from three to five 

 days. 



