Remedies intended to have immediate contact with the lining membrane of the bronchial tubes are administered by the hypodermic syringe (fig. 440), by puncturing the windpipe at a convenient spot about half-way between the throat and the chest, and propelling the contents of the syringe into the passage.

Syringe and Needles.

Fig. 440. - Syringe and Needles.

The skin over the portion selected should be rendered tense with the fingers of the left hand, while the right is employed in inserting the needle and directing it in a forward and downward direction. Horses commonly submit to this operation without much restraint, the slight pain caused ceasing when the needle has passed through the skin.