Bloat in Cattle 263 
downward and forward, and pushed into the rumen. 
Fig. 50. The trocar is withdrawn, leaving the canula 
in the opening for the escape of gas. The gas will 
rush out, and often bring with it a small 
amount of partially-digested food. Should the 
gas not escape, push the trocar into the canula, 
to clear out the food. In some eases, it is 
necessary to withdraw the trocar and canula, 
change its direction and insert it again, using 
the same opening in the skin. In the absence 
of a trocar and canula, a pocket-knife can 
be used, care being taken to direct the edge 
of the blade downward, so that, if the animal 
jumps, too large an incision will not be made. 
If the case is not so serious; medicinal re- 
medies will usually give relief. Place a large 
wooden bit, about the size of a fork handle, 
on which some pine tar may be daubed, in 
the mouth and hold it in place by a rope 
Fig. 50. 
Trocar back of the horns. After the bit is secured, 
and canula. | small handful of salt, thrown well back in 
the mouth, causes the animal to work the tongue, stimu- 
lates the flow of saliva, and promotes the regurgitation, 
or gulping up of gas. <A piece of tarred rope, tied 
through the mouth and back of the horns, is ex- 
cellent. Turpentine, in two-ounce doses for adult 
cattle, is a good remedy; but it must be well diluted 
with milk, to prevent injuring the animal. Hyposul- 
fite of soda, in ounce doses dissolved in water, is 
good, as is finely pulverized charcoal in heaping table- 
spoonful doses. Cold water may be dashed over the 
