. Contributions to embryology. Embryology. 1?G DEVELOPMENT OF EXTERNAL NOSE IN WHITES AND NfiGROES. TECHNIQUE. The following measurements (in millimeters) were taken on each specimen (see fig. 1). The sliding compass of Martin was used for measuring or (in the case of small specimens) a fine pair of dividers and a metal ruler. Sitting height: The fetus is placed on its back upon a horizontal surface, with the thighs and the car-eye horizon at right angles. The distance between the vertex of the head and the most caudal jjoint of the glutital region, parallel to the median- sagittal plane and t
. Contributions to embryology. Embryology. 1?G DEVELOPMENT OF EXTERNAL NOSE IN WHITES AND NfiGROES. TECHNIQUE. The following measurements (in millimeters) were taken on each specimen (see fig. 1). The sliding compass of Martin was used for measuring or (in the case of small specimens) a fine pair of dividers and a metal ruler. Sitting height: The fetus is placed on its back upon a horizontal surface, with the thighs and the car-eye horizon at right angles. The distance between the vertex of the head and the most caudal jjoint of the glutital region, parallel to the median- sagittal plane and to the horizontal sur- face, constitutes the sitting height. Upper-face height: Distance between nasion and stomion. The nasion on the face is situated horizontally in front of the median point of the naso-frontal suture. The exact determination of this point is rather difficult on fetuses. It is always situated above the le\'el of the eye-clefts, usually on a line uniting the highest points of the folds which limit the upper eyelids, or in rare instances even slightly above. This was determined by dissections and examinations of numerous median sagittal sections of fetal heads. With but few Inl'erocular breadfh. > Nasi on eighi' Upper face height' â '-Subnasale '^Sbmion Horizonl'al anjie Nasal breadHi exceptions the nasion was found to be Figure l.âSchematic representation of a fetal head, with above the deepest depression of the nasal measurements and points of measurement. bridge, a relation which holds good also for adults in the majority of cases (Schultz, 1918). The stomion is the median point of the oral cleft. In the not infrequent cases where a tuberculum labii sujjerioris projected downward the stomion was placed at the base of thisâi. e., the tuberculum was not included in the upper-face height. Nasal height: Distance between nasion and subnasal point. The subnasale is situated in the median sagittal plane, where the nasal septum meets the ujjper lip. In very yo
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