. Personal identification; methods for the identification of individuals, living or dead. r digitaldeltas are all present, but the radi-ants that help in separating thethree plantar areas assume a veryerratic course. The location ofthe three areas is, nevertheless,clear, and the pattern formula canbe readily made out. The ball pat-tern is a twin loop. Formula:W^-^- 5d. with one or more recurving ridges, a Central Pocket (Figure 67). Suchpatterns also are considered as whorls and the exponents C. P. are used toindicate them. Care must be taken to make sure that the ridges aroundthis pocket recu
. Personal identification; methods for the identification of individuals, living or dead. r digitaldeltas are all present, but the radi-ants that help in separating thethree plantar areas assume a veryerratic course. The location ofthe three areas is, nevertheless,clear, and the pattern formula canbe readily made out. The ball pat-tern is a twin loop. Formula:W^-^- 5d. with one or more recurving ridges, a Central Pocket (Figure 67). Suchpatterns also are considered as whorls and the exponents C. P. are used toindicate them. Care must be taken to make sure that the ridges aroundthis pocket recurve; for many times converging ridges will have the samegeneral appearance, and may be differentiated only by the use of a magni-fying glass. Loop Patterns, with no recurving lines regardless of theirgeneral appearance, will remain in the loop class. 168 Personal Identification Such difficult cases occur also in finger prints and in all systemsfounded upon patterns, and, to use an illustration of Galtons, cause aboutthe same amount of difficulty as do such surnames as the Macs and the. Figure 64. Tracing from theprint of a left sole. The three lastdigital deltas are present, but thefate of the first is uncertain. Al-though unusual, and quite out ofplace, the shape of the ridges in theregion of the first plantar area sug-gests that the first digital delta isfused with delta a of the ball patternor that it is replaced by it. The ballpattern is a typical Twin Loop, likethat of the preceding and succeed-ing Figures, the two loops fillingthe entire space. This counts informulation as a Whorl, wath theexponent letters T. W. Formula:
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