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Table A-1: the four handtypes defined by the Carus system of classification.
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Independent of each other, Faulds and Herschel discovered in 1880 that fingerprints are very usefull in matters of personal identification.
This discovery concerns a major milstone in the history of the forensic sciences.
The study of fingerprint dermatoglyphs was back then a very populair issue among scientists.
Among them was Sir Francis Galton.
Galton discovered via longitudinal studies that the fingerprints of each single person are unique.
Galton discovered that normally the major fingerprint characteristics of a person do not change during a his or her lifetime.
And Galtion discovered as well via twin studies and family studies that fingerprints show heritable characteristics.(3) |
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Galton's publictions on these matters can be regarded as the first milestone in the modern science of genetics.(4).
The next milestone was the discoveries made by the Down family.
Father Down described the major characteristics of Down's syndrome in 1866, and his son R.L. Down discovered in 1906 the relationship between the simian crease and Down's syndrome.(5)
- CONTENT: Carus, hand type, Charlotte Wolff, fingerprint identification, Galton, down syndrome, simian crease -
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References:
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1 - Carus, C.G. Uber Grund und Bedeutung der verschiedene Formen der Hand in verschiedene Personen. 1846.
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2 - Wolff, Ch. The hand in psychological diagnosis. New York: Philosophical Library Inc., 1952.
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3 - Gettings, F. The Book of the hand: an illustrated history of palmistry. (p.161). London: Paul Hamlyn Ltd. 1965.
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4 - Galton, F. Finger prints. London: Macmillan & Co., 1892.
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5 - Down, R.L. (1909). Discussion on p..65 of Shuttleworth, G E.: Mongolian imbecility. British Medical Journal, 11: p.661, september 11.