PLEURO-PNEUMONIA. 315 



will then evidently convey the sensation of a pulsatory 

 stroke through a watery medium. A smart rap also given 

 by an assistant on one side of the chest will produce to a 

 hand, held on the other, an undulation similar to that 

 received from a tap given to a bladder filled with water ; 

 and if the like experiment be at the same time made on 

 the sides of a healthy subject, a still more satisfactory proof 

 may be obtained. The hydrothoracic state of the chest 

 may be also suspected from the staring look and harsh feel 

 of the hair, as well as fi^om a yellow serous discharge from 

 the nostrils usually present, at first thin, but afterwards 

 thicker and glutinous. Any sudden exertion also alarms 

 such a horse ; he avoids turning, and resists holding his 

 head up from fear of strangulation, by altering the direct 

 course of the trachea. In this state he will continue, with- 

 out much variation, to eat, and will thereby deceive his 

 attendants : at length, however, he will be suddenly seized 

 with aggravated symptoms, which though seldom so acute 

 as at first, yet hurry the poor brute out of the world very 

 suddenly, he falling down dead. 



The treatment does not differ from that of pneumonia in 

 any other particular, than that we may here call in the aids 

 of mild purgatives and diuretics, with the addition of full 

 sedatives. 



PLEURO-PNEUMONIA, THE LATE COMPLAINT AMONG CATTLE. 



Pleuro-pneumonia has destroyed its hundreds of thou- 

 sands. At first it was much misunderstood ; and formerly 

 was treated by bleeding, blistering, sedatives, purging, and 

 setoning. The remedies were very energetic. But between 

 the force of the disease and the power of the cure the 

 animal died. The means of restoration became quite as 

 fearful as the complaint, till the owners grew desperate, 

 and resolved to have no doctor at all within their sheds. 

 By this resolution they were considerable gainers. Fewer 

 animals were lost. Deaths, though still frequent, were not 

 half that number they were at first ; and those that did die 

 cost nothing for being killed by physic. Thus all ways the 

 proprietors gained by getting rid of veterinary surgeons. 

 But, upon his dismissal, the true mode of treatment was 

 discovered by the veterinary surgeon, which in the bustle 



