517 



seventy, or even more beats in the sixty seconds. The heart, how- 

 ever, contrary to the debilitated condition of the pulse, is found beat- 

 ing violently and tumultuously, Kke it does in anthrax and septic 

 intoxication. The mucous membranes of the eyes and mouth and of 

 the g-enital organs are found somewhat oedematous, and they rapidly 

 assume a dirty, saffron color, at times approaching an ocher, but dis- 

 tinguishable from the similar coloration in influenza by the want of 

 the luster belonging to the latter and by the muddy, dull tint which 

 is characteristic throughout the disease. 



Suddenly, without the preMminary rales which precede grave 

 lesion of the lungs in other diseases, the blowing murmur of pneu- 

 monia is heard over a variable area of the chfest, usually, however 

 much more distinctly over the trachea at the base of the neck and 

 directly behind the shoulder on either side of the chest. In some 

 cases the evidence of lung lesion can only be detected over the 

 trachea. The body temperature has now reached 104°, 105° F., or 

 in extreme cases even a degree higher. The debility of the animal 

 is great without the stupefaction or evidence of cerebral trouble, 

 which is constant with such grave constitutional phenomena in influ- 

 enza or severe pneumonias. The animal is subject to occasional 

 chills, and on movement staggers in its gait. The yellow coloration 

 of the visible mucous membrane is rendered pale by infiltration of 

 the liquid of the blood into the tissues; the pulse may become so soft 

 as to be almost imperceptible, the heart movement and sounds being 

 at the same time exaggerated. The animal loses flesh rapidly, and 

 dropsies of the extremities, of the under surface of the belly, 'or of 

 the internal organs may show themselves. We then have all the 

 general phenomena of a profound ansemia. 



Termmatiojis.— These symptoms may gradually subside; with an 

 improved appetite the inanition may cease and the aminal commence 

 to nourish its impoverished blood and tissues; the pulse becomes 

 stronger, the heart more regular and less tumultuous; the mucous 

 membranes assume a brighter and more distinct color; the difficulty 

 of respiration is removed, and the animal may make a recovery but 

 at best the convalescence is a long one, and in many cases it is ques- 

 tionable If it is an economical proceeding to carry the animal through 

 It. More frequently the disease terminates by death. This is usuaUy 

 directly due to heart failure; in some cases it is caused by asphyxia 

 owing to the great amount of exudation into the lung tissue, render- 

 ing Its further function impossible; in most cases the anemia and 

 marasmus debilitate the animal until it dies as it would from the 

 same condition produced by any other cause. 



Complications.— The complications of oedematous pneumonia are 

 inflammatory or necrotic changes in the lungs themselves. Suppura- 

 tion at times takes place in the bronchi and may extend to the lung 

 tissue. In this case yve may find the mucous rales of a bronchitis 



