=Persistent urachus.= Seen in the new born and mainly in males.
Antiseptic closure is essential after having ascertained that the
urethra is pervious.
=Imperforate cervix vesicæ.= A case reported by Lapotre, in a calf, had
no cervix, and the ureters were blocked by pea-shaped nodules.
=Recto-vesical fistula.= In a calf 13 days old the rectum opened into
the bladder and the fæces and urine escaped by a pervious urachus.
(Kaufmann and Blanc).