_Imperforations._ In the new born male, foal, lamb, etc. Usually at the
outer end, and it may be for some distance back. In one case the sheath
was firmly adherent on the wall of the abdomen, thus shutting off all
exit of urine. If the canal is absent only at the orifice or for a short
distance, the urethra beyond this can be felt full of liquid and
fluctuating. The patient being properly fixed a fine trochar is pushed
from the end of the penis into the blind end of the urethra, which will
be ascertained by the overcoming of resistance. The trochar is now
withdrawn and the urine flows through the cannula. A catheter or sound
is now tied in the passage to maintain it pervious until cicatrization
shall have taken place.
_Hypospadias._ Short urethra opening backward on the lower surface of
the penis. Considered irremediable.
_Epispadias._ Urethra opening on the upper surface of the penis. Much
more rare.