The nervous system of the twins had little in common except in the line of union, the anus, and the sexual organs, and Christina was in good health all through Ritta's sickness; when Ritta died, her sister, who was suckling at the mother's breast, suddenly relaxed hold and expired with a sigh.

At the postmortem, which was secured with some difficulty on account of the authorities ordering the bodies to be burned, the pericardium was found single, covering both hearts.

The digestive organs were double and separate as far as the lower third of the ilium, and the cecum was on the left side and single, in common with the lower bowel.

The livers were fused and the uterus was double.

The vertebral columns, which were entirely separate above, were joined below by a rudimentary os innorminatum.