HOVEN. 285 



Hoven. — Tympanitis or Drum-helly, So called from the 

 appearance and sound. The evolution, or giving off of 

 carbonic acid gas, from the large quantity of grass or clever 

 when wet, contained within the rumen or paunch, together 

 with the suspension of the function of digestion, and peris- 

 taltic action of tlie bowels — all of which combined, go to 

 make up the disease called hoven. Hoven may occur in 

 one hour, for we often see cows turned out to pasture in 

 the mornino;, and are almost found suffocated in an hour 

 afterward. In cases of this kind there is obviously no 

 time to be lost. Every farmer should be prepared to meet 

 and cure them as they occur, there being no time to run 

 for assistance. 



Cause. Over filling the paunch, and in too quick a 

 time — before the stomach has time to act upon it; hence 

 fermentation is set up. 



Symptoms. Great distress; the sides are distended, and 

 when struck, sound like a drum, the beast lying and rising; 

 the breathing is hurried; there is great suffering, and if- 

 not speedily relieved, the rumen will give way, burst or 

 rupture; if this does not happen shortly, the brain becomes 

 affected, and the beast dies unconscious. The disease runs 

 its course with fearful rapidity. 



cz 



TROCAR, WITH CANULA. 



Treatment. At once plunge a dinner knife, well sharp- 

 ened, into the side, or at equal distance from the haunch 



