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Different regions ot the human cranium, as well as different aspects of its shape, are largely independent of each otherwith regard to the degree of' Deomoiphkm orarchimorphisin. Pronounced prognathism may be accompanied as well by a massive as by a gracile facial skeleton, a braincase large relative to facial size may be accompanied aa well by a rounded as by a sharply angullated occiput, etc. Thus, fossil hominid skulls showing various mosaic combinations of archaic and moderm features are to be expected, at every stage of evolution, simply as products of normal within-population variation.

Statural gains were of similar magnitude, ca. 2.0 cm., in each of the five categories of urbanization defined by population size of the locality of habitation. As a result, the regular urbanization-dependent gradient in stature, first detected in the 1976'cohort, reappears in little changed form 10 years later. No significant secular changes and no regular gradients can be seen in weight-for-height.

An intriguing social gradient of menarcheal age was found among girls from twelve different social groups defined by father’s occupation and occupational status. Menarcheal age was also found to depend upon parental education and family size.