putation of the hind limbs._--This is sometimes demanded on the one
extended limb when the other can not be brought up and delivery can not be
effected; also in case of monsters having extra hind limbs; when the calf
is dead, putrid, and bloated with gas; and in some cases of breech
presentation, as described under that head.

When the limb is extended the guiding principles are as in the case of the
fore limbs. The skin is cut through circularly above the fetlock and slit
up to beneath the pelvic bones on the inner side of the thigh. It is then
dissected from the other parts as high as it has been slit on the inner
side and to above the prominence (_trochanter major_) on the upper end of
the thigh bone on the outer side of the joint. In this procedure the hands
and spud can do much, but owing to the firmer connections the knife will be
more frequently required than in the case of the fore limb. The muscles are
now cut through all around the hip joint, and strong traction is made by
two or three men on the limb. If there is still too much resistance, a
knife is inserted into the joint on the inner side and its round ligament
cut through, after which extraction will be comparatively easy. This
accomplished, it will often be possible to extract the fetus with the other
leg turned forward into the womb. If the calf is bloated with gas, it may
be necessary to remove the other leg in the same way, and even to cut open
the chest and abdomen and remove their contents before extraction can be
effected. In the case of extra limbs it may be possible to bring them up
into the passages after the presenting hind limbs have been removed. If
this is not practicable, they may be detached by cutting them through at
the hip joint, as described under "Breech presentation," page 197.

Another method of removing the hind limb is, after having skinned it over
the quarter, to cut through the pelvic bones from before backward, in the
median line below, by knife, saw, or long embryotome (Pl. XX, fig. 1), and
then disjoint the bones of the spine (sacrum) and the hip bone (ilium) on
that side with embryotome, knife, or saw, and then drag away the entire
limb, along with all the hip bones on that side. This has the advantage of
securing more room and thereby facilitating subsequent operations. Both
limbs may be removed in this way, but on the removal of the second the
operator is without any solid point to drag upon in bringing away the
remainder o