. Anthropology. .. 1440 21 Chinese .. 1452 116 Kanakas .. 1470 27 Marqnesan Islanders .. 1452 7 Maoris .. 1446 12 Dahoman Negroes .. 1452 9 New Hebrideans .. 1432 15 Australians .. 1295 Oephalo-Orbital Index. The brain-case is not the only cavity of the skull of which cubicmeasurements have been made. The cavities and sinuses communi-cating with the nasal fossse have also been measured. M. Man- * Crania AmeiioftJia, by S. G. Morton. EoKo. Philadelphia, 1839. 232 CKANIOMETEICAL MEASITREMENTS. [Chap. ii. tegazza has made tlie orbits his special study in this respect. Hecloses the orifices with w
. Anthropology. .. 1440 21 Chinese .. 1452 116 Kanakas .. 1470 27 Marqnesan Islanders .. 1452 7 Maoris .. 1446 12 Dahoman Negroes .. 1452 9 New Hebrideans .. 1432 15 Australians .. 1295 Oephalo-Orbital Index. The brain-case is not the only cavity of the skull of which cubicmeasurements have been made. The cavities and sinuses communi-cating with the nasal fossse have also been measured. M. Man- * Crania AmeiioftJia, by S. G. Morton. EoKo. Philadelphia, 1839. 232 CKANIOMETEICAL MEASITREMENTS. [Chap. ii. tegazza has made tlie orbits his special study in this respect. Hecloses the orifices with wax, and fills the cavities with mercury,the volume of which he afterwards measures. The sum of thevolumes of both orbits thus obtained he compares with the cerebralcapacity. This is the cephalo-orbital index. His mean upon 200adult skulls from various sources was 272, and the extremes 227,and 36-5, not taking into account an index, evidently abnormal, of5 38 in an American skuU. But it is important to be able to. Fig. 26.—The Callipers (Compas dBpaiaseur). distinguish between one race and another. To this end we havetaken from M. Mantegazzas measurements of these 200 skuUsrecently pubhshed, 20 Italians and 12 !Negroes and Oceanians, andthe following are their cephalo-orbital indices :* 20 Italians ... 2 Australians 3 New Zealanders6 Negroes ... * Dei Caratteri Geraroliia del Cranio Umano, ty Paolo Mantegazza, inAroliivio dell Anthropologia e la Etnologia. Florence, 1875. Chap, ii.] CEANIOMETEICAL POINTS. 233 The number of each series, except the first, is unfortunately toofew for us to be able to form any conclusion respecting Ifew Zealanders appear to have larger orbital cavities than theAustralians in proportion to the cerebral cavity. This result should be considered, according to M. Mantegazzasproposal, by comparing Man with the anthropoid apes, namely, thatthe orbital capacity is smaller relatively to the cranial capacity,that the dominant p
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