1. Cummins, H., and Midlo, C., Finger Prints, Palms and Soles (Philadelphia: The Blakiston Co., 1943).
2. Galton, F., Finger Prints (London, Macmillan and Co., 1892).
3. Bonnevie, K., J. Genet., 15, 1 (1924).
4. Holt, S. B., Brit. Med. Bull., 17, 247 (1961).
5. Fang, T. C., J. Ment. Sci., 96, 780 (1950).