In the files of the Federal Bureau of Investigation, all prints bearing an age of 55 through 74 are filed in the "Reference" group and all prints bearing an age of 75 years or more are filed in the "Presumptive Dead" file. Persons 75 years of age or older, in regard to crime, may be considered as generally inactive and thus are filed as "Presumptive Dead." Such a group provides for removing from the other files the cards concerning those of whom no notice is ever received as to death. A separate file should be maintained for deceased persons, for possible future reference. A separate file should be maintained for all prints bearing amputations and which have an unequivocal statement or marking from the contributor to that effect. Permanent scars also may be utilized for this purpose, giving three more groupings: those prints having permanent scars in the right hand, those having a scar in the left, and those in which scars appear in both hands. A separate file may be maintained for mutilated prints whether or not the permanent-scar division is used. This is usually composed of prints so badly mutilated, or so mutilated about the cores and deltas, that intentional mutilation is suspected. [Illustration: 354] +--------------+ +--------------+ +--------------+ +--------------+ | WHORL | |CENTRAL POCKET| | DUAL LOOP | | ACCIDENTAL | | -W- | | LOOP | | -D- | | -X- | | | | | | | | | |[Illustration]| |[Illustration]| |[Illustration]| |[Illustration]| +--------------+ +--------------+ +--------------+ +--------------+ PATTERN HAVING PATTERN HAVING TWO SEPARATE TWO OR MORE ONE CORE. LINE ONE CORE. LINE AND DISTINCT DIFFERENT TYPES DRAWN FROM DRAWN FROM LOOPS IN ONE PATTERN. DELTA TO DELTA DELTA TO DELTA ANY UNUSUAL CUTS ONE OR CUTS NO PATTERN NOT MORE RECURVES RECURVES DEFINED IN OTHER CLASSIFICATIONS CHAPTER V _Classification of Scarred Patterns--Amputations--Missing at Birth_ _Classification of scarred patterns_ Emphasis should be placed upon the necessity for fully referencing all scarred patterns. In connection with their proper classification, the following rules should be observed: - When an impression is so scarred that neither the general type of pattern nor the ridge tracing or count can be determined with reasonable accuracy, the impression should be given both the general type value and the subclassification value of the corresponding finger of the other hand.