[Spatial distribution of facial volumes. Ontogenetic and phylogenetic study with vestibular orientation].

On cephalic skeleton of Man and two species of chimpanzees, statistically considered during their growing, a sagittal area is measured in facial mass and total face. Barycenters are determined. This points describe, in vestibular axis, ontogenic curves with posterior concavity more important in Man. Remarkable relations exist between barycenters and several facial and mandibular points, and with those of frontal and parietal vault.