]74 MR. youatt’s veterinary lectures, 
clearly indicated a case of bronchitis. There are many corrobo¬ 
rative symptoms which you should store in your memories. The 
variable temperature of the extremities will be an important 
guide,—not deathy cold as in pneumonia, nor of increased tem¬ 
perature as often in catarrh, but with a tendency to coldness, 
yet not always the same. The pulse will assist your diagnosis, 
—more rapid than in catarrh, much more so than in the early 
stage of pneumonia, not so hard as in pleurisy, more so than in 
catarrh, and much more so than in pneumonia. The respiration 
will next be examined, abundantly more rapid than in catarrh, 
pneumonia, or pleurisy; generally as rapid and often more so 
than the pulse, and accompanied by a wheezing sound, heard at 
some distance. Mr. Percivall relates a case in which the respi¬ 
ration was more than one hundred in a minute. Mr. C. Perci¬ 
vall describes an interesting case in which the respiration was 
quick in the extreme; and he remarks, that he does not 
remember to have seen a horse wuth his respiration so disturbed.’^ 
In addition to these clearly characteristic symptoms, you will 
observe a haggard coiuitenance, to which the anxious look of the 
horse labourino; under inflammation of the lunos cannot for a 
moment be compared ; and an evident dread oj suffocatioyi, ex¬ 
pressed, not by inability to move as in pneumonia, but frequently 
an obstinate refusal to move; cough painful in the extreme; 
breath hot, yet no marked pain in the part, no looking at the 
side or flanks. 
As the disease proceeds, there will be considerable discharge 
from the nostrils, much more than in catarrh, because greater ex¬ 
tent of membrane is affected. It will be muco-purulent at first, but 
wull soon become amber-coloured or green, or greyish green ; and 
that not from any portion of the food being returned, but from the 
peculiar hue of the secretion from ulcers of the bronchial pas¬ 
sages. Small organized pieces will mingle with the discharge,—• 
portions of mucus condensed and hardened, and forced from the 
inside of the tube. If the disease proceeds, the discharge be¬ 
comes bloody, and then, and sometimes earlier, it is fetid. 
Progress. —The natural termination of this disease, if un¬ 
checked, is in pneumonia. Although w’e cannot trace the air- 
tubes to their termination, the inflammation will penetrate into 
the lobuli, and affect the membranes of the air-cells or divisions 
which they contain. There is metastasis of inflammation oftener 
here than in pure pneumonia, and the disease is most frequently 
transferred to the feet. If, however, there is neither pneumonia 
nor metastasis of inflammation, and the disease pursues its course, 
the animal dies from suffocation. If the air-passages are clogged, 
there can be no supply of arterialized blood. 
