DISEASES OF THE RESPIRATORY ORGANS. 040 



Give as one dose. Repeat it every two hours till the chill is over and 

 the pulse reduced to soft, instead of being hard ; then change to No. 18, 

 which should be continued till convalescence is well established. Then 

 change to No. 20, and after a few days to No. 21. Early and vigorous 

 application of mustard paste to the sides is very important. Allow all 

 the water to drink he will take, and feed on soft food. 



rv. Pnexunonia. 



This is inflammation of the lung tissue — that is, of the lung itself. 

 A severe cold (catarrh) may develop rapidly into this form, but it is 

 oftener the sequel of laryngitis, bronchitis, etc., from their inflam- 

 matory conditions extending to the lungs. It is more common among 

 cattle than any other domestic animals, and may affect one or both 

 lungs. 



How to know it. — The animal shows obvious preliminary symptoms, 

 such as a severe shivering fit, staring coat, loss of appetite, cessation of 

 rumination, and, if a milch cow, loss of i'uilk. She is very averse to 

 lying down, owing to the increased pressure it would cause upon the 

 chest, thus augmenting the pain and difiiculty in breathing. The pulse is 

 full, soft and quick, ranging from 60 to 80 pei minute ; respirations from 

 30 to 40 per minute ; and the temperature about 104 ® to 106 ° . When 

 the sides are tapped, a dull, heavy, full sound is heard, and on placing 

 the ear to the side there will be noticed an absence of the respiratory 

 murmur in all affected parts; the expired air is hot; the ribs are fixed, 

 the breathing being done by the abdominal muscles ; the flanks heave, 

 the nostrils are dilated, and the countenance has an anxious look. The 

 lung becomes more or less hepatized (solid like liver), and this may 

 terminate in resolution by absorption of the infiltration, and complete 

 recovery follow, or it may go on to suppuration, with discharges of pus 

 through the nose, which soon carries the patient off. Death may take 

 place in any of the stages, viz : congestion, or first stage ; hepatization, 

 or second ; or in suppuration, or third stage. 



When the lung becomes solid, the cow braces herself and pants 

 furiously, heaving the flanks as though each breath would be the last. 

 If the head is raised quickly, she will fall backwards. When she has to 

 fall finally, she drops first upon her knees and chest, and then down, and 

 dies in a few minutes. On post mortem examination the diseased lung 

 will be found to be solid from the exudations within the interlobular 

 will be found to be solid and marbled in color. 



When gangrene has taken place, which may occur before death, that 

 part of the lung will be of a bluish black color, while the rest of th§ 

 organ will be more of a dark brownish purple 



