519 



lesions are noticed. The feebleness of 1 he mnscles and want of coordi- 

 nation are from the ontset the evident result of a poisoned condition 

 of the brain, as shown b}^ the stupor of the animal; the saffron or 

 ocher coloration of the visible mucous merftbrane is of a decided tint, 

 and while these membranes may be o^deinatous, they become so as 

 the result of an increase in the quantity of blood in their capillaries, 

 or by congestion, and not from the a?dematous infiltration of the 

 watery portion of the blood, as in the disease in question. 



Prognosis. — CEdematous pneumonia is an excessively fatal disease. 

 "We have seen that it usually attacks animals which are alread}' in 

 more or less of a depraved condition or weakened in their vital forces 

 by the bad hygienic surroundings to which they have been subjected. 

 Rapid increase in the area of infiltration in the lungs, as shown by 

 dullness on percussion and the extent of the tubular murmur, is an 

 unfavorable symptom. Increased prostration in the early part of the 

 disease augurs badly for the chances of future resistance to the effects 

 of the local lesions. Suppuration with the formation of abscesses and 

 gangrene in the lungs are even more serious in this disease than as a 

 complication of other diseases, on account of the debilitating character 

 of the original trouble. 



Alterations. — At the time of death from oedematous pneumonia we 

 frequently find septic changes and the evidences of putrefaction. The 

 solidification of the lung tissue is found irregular in shape and high 

 up around the root of the lungs and around the large bronchi, and is 

 generally covered by sound lung tissue. The anterior lobes of the 

 lungs are usually entirely affected. The diseased portion appears of 

 a gray-yellowish' color, somewhat watery, and tears readily. Matter 

 is found in the air tubes which form gutters througli the jelly-like 

 mass of the diseased lung. Abscesses, from the size of a nut to larger 

 masses, may be found disseminated through the lungs. The blood is 

 dark in color, fluid, or only clotted into soft, jelly-like masses. Classes 

 of gangrenous or dead black tissue may be present. 



Treatment.~A study of the symptoms Avill indicate at once tliat the 

 antiphlogistics, or those remedies which we employ in such sthenic dis- 

 eases as fibrinous pneumonia, strangles, etc. , are not to be employed 

 in this disease. Bleeding would only still further weaken an already 

 enfeebled animal; antimony or the alterants would increase the 

 depression of a too depraved constitution. There is in this disease no 

 acute congestion of a particular organ to draw off by depletive meas- 

 ures, nor any violent blood current to be retarded, for fear of liyper- 

 nutrition of any special j^art. 



Revulsives do good, as they excite the nervous system and awaken 

 the torpor of the weakened blood vessels, which aid in the reestablisli- 

 ment of the functions. Mustard poultices may be applied over the 

 belly and sides of the chest, as in other diseases, but caution must be 

 used in the emploj'ment of blisters, as ugly ulcers may result from 



