It is indeed only among the Eudrilidae that the enclosure of the ovaries in septal sacs is at all general.
The first dorsal spinal nerve coincides in position with the myocomma which separates the first myotome from the second on each side, and thereafter the successive dorsal roots pass through the substance of the myocommata on their way to the skin; they are therefore septal or intersegmental in position.
The septal ostia become widened and the gastral cavity flattened, whereby the taeniolae become comparatively shallow columns, similar to the septal nodes or cathammata of other forms.'
This tape is concerned with the atrioventricular septal defect in the setting of a common atrioventricular septal defect in the setting of a common atrioventricular junction.
Dr. Hanley had closed Fahad's ventricular septal defect with a patch of the pericardium.