VIEW THE MOBILE VERSION of www.handwritinganalysis.ca Informational Site Network Informational
Privacy

Home - Disputed Handwriting - Science of Fingerprints

Articles from The Science Of Fingerprints

Name Files

How To Take Inked Fingerprints

The Plain Whorl

Central Pocket Loop

Deformities

Radial And Ulnar Loops

Deceased Infants

Interpretation

Double Loop

Classification Of Amputations And Fingers Missing At Birth


Extensions





THE SECOND SUBSECONDARY CLASSIFICATION: When a group of fingerprints
becomes so large that it is cumbersome and unwieldy, even though fully
extended, it can be subdivided further by using a second subsecondary
division, which is brought up into the classification formula
directly above the subsecondary, and for which the symbols S, M and L
are used. The following table is used:

Index Middle Ring

1 to 5, inclusive, S. 1 to 8, inclusive, S. 1 to 10, inclusive, S.
6 to 12, inclusive, M. 9 to 14, inclusive, M. 11 to 18, inclusive, M.
13 or more, L. 15 or more, L. 19 or more, L.

If this table is referred to, a study of figure 352 will demonstrate
the use of the second subsecondary.



LEAVE THIS SPACE BLANK SEX
+--------------+
FBI No. RACE
+--------------+ LAST NAME FIRST NAME MIDDLE NAME
---------------------------------------------------------------+----------
SIGNATURE OF PERSON CONTRIBUTOR ALIASES HT. WT.
FINGERPRINTED AND ADDRESS (IN.)

DATE OF
----------------------------- BIRTH
RESIDENCE OF PERSON
FINGERPRINTED HAIR EYES

--------------------------------------------------------------------------
OCCUPATION ARREST NUMBERLEAVE THIS SPACE BLANK

------------------------------------------
SCARS AND MARKS PLACE OF
BIRTH 22 M 11 U OOO
-------------CLASS
-----------------------------CITIZENSHIP L 6 U OMI 13
SIGNATURE OF OFFICIAL DATE
TAKING FINGERPRINTS CHECK IF
NO CRIMINALREF.
RECORD IS
DESIRED
---------------------------------------------------------------------------
1. RIGHT THUMB2. RIGHT INDEX3. RIGHT 4. RIGHT RING 5. RIGHT LITTLE
22 11 MIDDLE 19 O O

[Illustration][Illustration][Illustration][Illustration][Illustration]

---------------------------------------------------------------------------
W W
---------------------------------------------------------------------------
1. LEFT THUMB 2. LEFT INDEX 3. LEFT M4. LEFT RING 5. LEFT LITTLE
18 10 MIDDLE I I 13

[Illustration][Illustration][Illustration][Illustration][Illustration]

---------------------------------------------------------------------------
/ / W W /
---------------------------------------------------------------------------

WCDX EXTENSION: In the extension used in the Federal Bureau of
Investigation for the large whorl groups, the type of whorl is
designated by the symbols W, C, D, or X for the index fingers and w,
c, d, or x for all other fingers, according to its classification as
defined in figure 354. These symbols are used for subclassification
purposes only and are brought up into the classification formula
directly above the subsecondary in their respective positions, the
right hand being the numerator, the left hand being the denominator.

SPECIAL LOOP EXTENSION: In the all-loop group

(1R-U)
------
(1R-U),

the following special loop extension may be used, utilizing the ridge
counts in fingers Nos. 2, 3, 4, 7, 8, 9, and, if necessary, No. 10:

Ridge Counts Value

1 to 4, inclusive 1
5 to 8, inclusive 2
9 to 12, inclusive 3
13 to 16, inclusive 4
17 to 20, inclusive 5
21 to 24, inclusive 6
25 and over 7

The resulting values in this extension are brought up into the
classification formula directly above the subsecondary in their
respective positions, the right hand being the numerator, the left
hand being the denominator.

In addition to the extensions already mentioned, fingerprint groups
may be divided into male and female, and by age (either by year or by
arbitrarily setting an age limit, beyond which a print bearing such an
age would be filed separately in a Reference or a Presumptive Dead
file).

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.



+--------------+ +--------------+ +--------------+ +--------------+
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





Next: Classification Of Scarred Patterns

Previous: The Classification Formula



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 3394