Having covered the eyes of the cow to be operated upon, she is placed against a wall, provided with five rings firmly fastened and placed as follows: the first corresponds to the top of the withers; the second, to the lower anterior part of the breast; the third is placed a little distance from the angle of the shoulder; the fourth is opposite to the anterior and superior part of the lower region; and the fifth, which is behind, answers to the under-part of the buttocks. A strong assistant is placed between the wall and the head of the animal, who firmly holds the left horn in his left hand, and with his right, the muzzle, which he elevates a little. This done, the end of a long and strong-plaited cord is passed, through the ring which corresponds to the lower part of the breast, and fastened; the free end of the cord is brought along the left flank, and through the ring which is below and in front of the withers. This is brought down along the breast behind the shoulder and the angle of the fore-leg in order to pass it through the third ring; then it must be passed around against the outer angle of the left hip, and fastened after having been drawn tightly to the posterior ring, by a simple bow-knot. The cow being thus firmly fixed to the wall, a cord is fastened by a slip-noose around her hocks, to keep them together in such a manner that she cannot kick the operator, the free end of the cord and the tail being held by an assistant. The cow thus secured cannot, during the operation, move forward, nor lie down, and the operator has all the ease desirable, and is protected from accident.