Oil Common Colds. 105 



InKalation of sulphurous acid gas, well diluted with air, 

 is frequently useful. The gas is mixed as follows : — 



Mix half an ounce of the milk of sulphur with as much 

 powdered charcoal, and burn it in a moderate sized, loose 

 stable, allowing the horse to remain in the atmosphere for 

 half an hour. Repeat this daily. If it causes much cough- 

 ing, it is too concentrated, and must be diluted with more 

 air by opening the door. 



For the chronic form, or nasal gleet, one of the following 

 washes should be syringed up the nostrils every morning ; — 



No. 44. Chloride of zinc, 30 gr. 



Water, 2 qts. 



Or 



No. 45. Carbolic acid, 1 oz. 



Water, 2 qts. 



As the best internal medicine in such cases, Mr. Chawner 

 recommends : — 



No. 46. Sulphate of copper, 

 V, Nitre, 



Powdered gentian, of each 1 dr. 



Make into a ball with linseed meal, and give every night and morning. 



COLD IN THE CHEST -BRONCHITIS— CHRONIC COUGH. 



Definition. — Inflammation of the lining membrane of the 

 windpipe and smaller air tubes leading to the lungs, charac- 

 terized by hoarse cough and shortness of breath. 



Causes.— Exposure to sudden changes of temperature; 

 standing uncovered when heated by driving; standing in 

 drafts, and getting chilled from wet, etc. 



Symptoms. — The most prominent is the cough. This is 

 at first dry and ringing, but soon becomes hoarse, loud, and 

 in spells. The pulse and breathing are both generally in- 

 creased, sometimes very much so, to the extent of seventy or 

 eighty in the minute. The animal is dull and listless, hangs 



