It seems clear, from the counter-balanced shape of the series of arrows in Figure 5 that there was about an equal number of early and late Onsets and Completions for the 34 girls. Accordingly, if epiphyseal diaphyseal fusion occurs in this phalanx near menarche, early and late menarches might have been forecast rather precisely at the time of Onset of ossification for the 18 girls with ``same schedule.'' As an example of the interpretation of an arrow in the figure which exceeds four months in shaft length in conjunction with its position in the figure: girl 2 had a delayed Onset and further delayed Completion. It is of interest that her menarche was somewhat later than the average for the girls in this group.

A similar analysis of Figure 6 for the 34 boys would necessitate quite a different conclusion about the predictive value of onset age in forecasting their attainment of the pubescent stage. Boys 32, 23, 31, 17, 30, 19, and 24 had ``same schedule'' at Onset and Completion; thus early forecasting of the pubescent stage would appear possible for only seven boys. Boy 34, like girl 2, did not have ``same schedule''; his arrow crosses the line denoting the mean. The ``dot'' on his arrow indicates early Onset and the ``tip'' indicates relatively later Completion.

After the 42 figures had been drawn like Figures 5 and 6, classifications of the onset ages and completion ages were summarized from them.