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The mean length (second column) in mms from month to month (first column) of a prenatal child. Data obtained by W. His, as reported in "On Growth and Form" by D'Arcy Thomas, Dover, 1992, page 111.

1st col	2nd col
1	7.5
2	40.0
3	84.0
4	162.0
5	275.0
6	352.0
7	402.0
8	443.0
9	472.0
10	500.0