. Anthropology . Lapps from Scandinavian museums (Hamy) TJie Vertical Index. 71-37 71-7572-2276-0076-6077*4577-4078-0081-8782-9083-0084-0684-93 The vertical index, or index of height, is less important. It givesthe form of the skull according to an antero-posterior section, whichdivides the cranial ovoid into two lateral halves, in the same wayas the cephalic index, or the index of breadth gives the form of Chap, ii.] VERTICAL INDEX. 243 the skull such as is shown by the norma verticalis of is the relation of the vertical diameter to the before-mentioned,maximum anteroposterior d
. Anthropology . Lapps from Scandinavian museums (Hamy) TJie Vertical Index. 71-37 71-7572-2276-0076-6077*4577-4078-0081-8782-9083-0084-0684-93 The vertical index, or index of height, is less important. It givesthe form of the skull according to an antero-posterior section, whichdivides the cranial ovoid into two lateral halves, in the same wayas the cephalic index, or the index of breadth gives the form of Chap, ii.] VERTICAL INDEX. 243 the skull such as is shown by the norma verticalis of is the relation of the vertical diameter to the before-mentioned,maximum anteroposterior diameter. Its formula is ^^~^^am7 But there is a want of unanimity here ; in France there is onlyone way of taking the vertical diameter; in other countries thereare several different ways. There is not the slightest doubt thatits inferior extremity should commence at the occipital foramen,and, for greater precision, at the basion. But where are we tomake its superior extremity meet? What we look for first is the. Fig. 28.—A P Q, Alveolo-condylean plane ; K V, True vertical diameter in relation to thisplane; K C, Plane of the occipital foramen ; K V, Vertical diameter of Mr. B. Davisin relation to this plane; K B, Vertical or basilo-bregmatic diameter of M. Broca;K N, Naso-basilar line; K A, Alveolo-basilar line; A N, Naso-alveolar line; K N A,Facial triangle of Vogt; K E, Basilo-sub-nasal line; NE, Naso-sub-nasal line j K N E,Facial triangle of Welcker. For the other lines, &c, see Fig. 5. culminating point of the vertex. How are we to determine if?Some guess it; others make it have relation to one of the natural ajxLanes at the base of the skull. Now, if. following the example ofMr. B. Davis, we make it have relation to the plane of the occipitalforamen, it falls generally about three or four centimetres behindthe bregma, while if it has relation to the real plane of the base,the alveolo-condylean, it corresponds as nearly as possible to thebregma. The following shows the si
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