the haunches and held between the knees. Care should be exercised in giving
irritating drenches to sheep, especially if the drench be bulky.

_A herd of hogs_ may be quickly and easily drenched if they are confined in
a small pen, and the loop of a small rope placed around the snout, well
back toward the corners of the mouth. A small metal dose syringe should be
used. If the drench is bulky and the hog difficult to hold, it may be
necessary to elevate the head and raise the forefeet from the ground. The
drench should not be given until the hog is quiet and well under control,
as there is some danger of the medicine passing into the air passages and
doing harm. It may be necessary to mark the hogs that have been drenched
with a daub of paint, or in some other manner in order to be able to
distinguish them from the untreated animals.

The administration of drugs enclosed in a gelatin capsule, or mixing them
with syrup, honey or linseed oil, and rolling the mass into the form of a
cylinder is commonly practised. The _capsule_ or _ball_ may then be shot
into the pharynx with a balling gun. A ball may also be given to the larger
animals by carrying it into the back part of the mouth with the hand, and
placing it on the back part of the tongue. In the horse this method of
administration requires some practice. The tongue must be pulled well
forward, the head held up, and the tongue released as soon as the ball is
placed on the tongue, so that it may pass back into the pharynx.

The administration of drugs by _injecting beneath the skin_ (Fig. 7) is
suitable when the drug is non-irritating and the dose is small. Drugs
administered in this way act promptly and energetically. The alkaloid or
active principle of the drug is commonly used. A fold of the skin is picked
up with the fingers and the needle is quickly introduced, care being taken
not to prick or scratch the muscular tissue, as this causes some pain and