It was so small at birth that the father passed his ring over the foot almost to the knee.
On the thirteenth day it weighed 1250 grams, and at the end of a week it was taking the breast.

In December, 1879, it had 16 teeth, weighed 10 kilograms, walked with agility, could pronounce some words, and was especially intelligent.

Capuron relates an instance of a child born after a pregnancy of six and a half months and in excellent health at two years, and another living at ten years of the same age at birth.
Tait speaks of a living female child, born on the one hundred and seventy-ninth day, with no nails on its fingers or toes, no hair, the extremities imperfectly developed, and the skin florid and thin.

It was too feeble to grasp its mother's nipple, and was fed for three weeks by milk from the breast through a quill.

At forty days it weighed 3 pounds and measured 13 inches.