- 著者
- FUSAO ISHIHARA
- 出版者
- The Anthropological Society of Nippon
- 雑誌
- Journal of the Anthropological Society of Nippon (ISSN:00035505)
- 巻号頁・発行日
- vol.63, no.4, pp.121-127, 1954-03-27 (Released:2008-02-26)
- 被引用文献数
- 1 1
Studies have been made since 1949 on 201 white American-Japanese and 66 Negro-Japanese hybrids in the Tokyo area and in Kanagawa Prefecture. They were all under six years of age, and their mothers were invariably Japanese. The results are as follows:(1) Blood type. The figures for B and O types respectively stand about halfway, between the corresponding figures for the two races. The racial blood index of the white American-Japanese is 2.93, showing a European type, while that of unmixed Japanese stands at 1.35 and is consistently Asiatic. The racial serologic point of the hybrids, as Figure 1 shows, stands at about the midpoint between the two races (Table 1). (2) Dermatoglyphs. Hybrids show the middle percentage of the pattern of two races (Table 2 and 3). (3) Color of skin. By comparison with Hintze's Color Table, we have ascertained that, the skin of the American-Japanese hybrids is 13% whiter than that of unmixed Japanese, and is 2.4% less white than that of white race. Namely in color, it is very near to that of whites and is almost devoid of the characteristic yellowish shade (Table 5). (5) Color and form of hair. About half (52.2%) of the American-Japanese hybrids have black hair, and 11% blond hair. The hair of 60% of the American-Japanese hybrids is straight and that of 14% slightly curled. On the whole, the hair is more wavy in form thanit is intermediate between the two races. (6) Color of iris. A majority (88%) of the American-Japanese hybrids possess a black iris, with only a minority (0.4%) having a bluiush one. It is concluded that the black color of iris is one of the most dominant hereditary factors of the Japanees race in crosses involving the white race (Table 6). (7) Mongolian fold. The Mongolian fold is found in 21.8% of the hybrid children as much as the ratio of Japanese children having the fold at the same age is 23% (Table 7). (8) Stature and weight. An examination of stature and body weight of hybrid children shows that they are about the same as Japanese children in both measurements, but are smaller and lighter than white children. The cephalic index tends near to that of white children. The curve of the nose index and the facial index transverse an intermediate zone between the ranges of both races. (9) Mental tests and deformities. The intellingence quotients are a little lower -by 5 on the average- than comparable figures for Japanese natives. In all there have been three cases of hernia, one case of syndactylism, three cases of idiocy. It is believed that such deformities have been caused through the various operation during the pregnancy.