_Breast and abdomen presented._--All four feet in the passages._--In this form the calf lies across the womb with its roached back turned forward and its belly toward the pelvis. All four feet may be extended and engaged in the passages, or one or more may be bent on themselves so as to lie in front of the pelvis. The head, too, may usually be felt on the right side or the left, and if detected it serves to identify the exact position of the fetus. The position may further be decided upon by examination of the feet and limbs. With the limbs extended the front of the hoofs and the convex aspect of the bent pasterns and fetlocks will look toward that flank in which lie the head and shoulders. On examination still higher the smooth, even outline of the knee and its bend, looking toward the hind parts, characterize the fore limb, while the sharp prominence of the point of the hock and the bend on the opposite side of the joint, looking toward the head, indicate the hind limb. (Pl. XVII, fig. 5.) The remedy of this condition is to be sought in repelling into the womb those limbs that are least eligible for extraction, and bringing into the passages the most eligible extremities. The most eligible will usually be those which project farthest into the passages, indicating the nearer proximity of that end of the calf. An exception may, however, be made in favor of that extremity which will give the most natural presentation. Thus if, owing to obliquity in the position of the fetus, the hind extremities promised a presentation with the back of the fetus turned down toward the udder, and the anterior extremities one with the back turned up toward the spine, the latter should be selected. Again, if the choice for the two extremities is evenly balanced, the hind may be chosen as offering less risk of complication, there being no head to get displaced. The first step in the treatment is to place a running noose on each of the four feet, marking those of the fore limbs to distinguish them from those of the hind ones. In case it is proposed to bring the anterior extremities into the passage, a noose should also be placed on the lower jaw. Then run the ropes attached to the two feet that are to be pushed back through the ring of a cord carrier (Pl. XXI, fig. 5), passing the rings down to the feet, and by the aid of the carrier push them well back into the womb and hold them there. Meanwhile drag upon the ropes attached to the two other feet so as to bring them into the passage (or, in case of the anterior extremity, on the two foot ropes and the head one). The other feet must be pushed back into the womb until the body of the calf is fully engaged in the passages. After this they can no longer find an entrance, but must follow as the body escapes. NEGLECTED AND AGGRAVATED CASES.