guessed the weight from lifting it.

Although the fetus frequently changes its position during the earlier
months of pregnancy, generally by the beginning of the tenth lunar
month it has assumed a permanent posture. It has then reached such a
size that it can best be accommodated in the cavity of the uterus if
its various parts are folded together so as to give the fetus an
ovoid shape. To secure this form its back is arched forward, and its
head bent so that its chin touches its chest; its arms are crossed
just below the head, its legs raised in front of the abdomen, and its
knees doubled up. In this form the fetus occupies the smallest
possible space.

With relation to the mother the position of the child, for several
weeks before birth, is one in which its long axis is parallel to the
long axis of her body. This remains true no matter whether the head
or the buttocks are to precede at the time of birth. In ninety-seven
out of a hundred cases, however, the head lies lowermost and
consequently is the first portion of the child to be born. The
opposite position, in which the head is the last portion born, is,
even with the most skillful treatment, somewhat more serious for the
infant, though not for the mother.

THE NEWBORN INFANT.--The baby at birth is not a miniature man. As
compared with an adult its head and abdomen are relatively large, its
chest relatively small; its limbs are short in proportion to the
body; and at first glance it appears to have no neck at all. The
middle point of a baby's length is situated about the level of the
navel, whereas in a man the legs alone represent approximately half
his height. The changes after birth consist chiefly in growth; but