DISEASES OF THE OX AND SHEEP. 



419 



fluid. If the disease proceeds, the animal becomes worse, and 

 greatly debilitated. The surface of the body becomes cold, and 

 the pulse-beat imperceptible, until at length the animal sinks 

 and dies. 



In many cases under our notice as much as six to seven 



Fig. 51. 



The above illustration shows the method of drawing the skin into folds 

 previous to making the primary incision for paracentesis thoracis, in a case of 

 iydrothorax. 



Fig. 52. — The Trochab and its Outer Case, the Canula. 



This instrument is used both in cases of tympanitis and in those of hydro- 

 :thorax and pleuritic effusion. 



Fig. 53. 



In the above picture the fluid is seen to be flowing from the chest by means 

 i of a canula. The vessel is used for collecting the fluid and pouring it into a 

 f -pail or bucket. 



gallons of fluid have been eff'used into the chest in the course of 

 a few days. 



After giving a laxative, we usually recommend drenches of 

 acetate of ammonium, camphor, and nitric ether every four 



27 * 



