One half of the udder may be removed by the following method:

First stage. Elliptical incision through the skin, including the two teats of one side.

The lines of incision should extend backwards sufficiently high to enable the vessels at the base of the gland to be easily ligatured.

Second stage. Dissection and breaking down of the subcutaneous and intermammary connective tissue. The anterior mammary vein must be ligatured.

Third stage. Isolation of the mamma from the front backwards, and ligature of the vessels of supply. Extirpation.

Fourth stage. Suture and drainage of the operative wound with iodoform gauze.

Fig. 328.—Ablation of the udder in the cow. Li, Line of incision; Lp, prolongation backwards.

Fig. 329.—Ablation of the udder in the goat. Li, Line of incision; Lp, prolongation backwards.