The Science of Fingerprints, United States. Federal Bureau of Investigation [good books to read in english TXT] 📗

patterns may be further divided into sub-groups by means of the smaller differences existing between the patterns in the same general group. These divisions are as follows:

I. ARCH

a. Plain arch. b. Tented arch.

II. LOOP

a. Radial loop. b. Ulnar loop.

III. WHORL

a. Plain whorl. b. Central pocket loop. c. Double loop. d. Accidental whorl.

Illustrations 1 to 10 are examples of the various types of fingerprint patterns.

[Illustration: 1. Plain arch.]

[Illustration: 2. Tented arch.]

[Illustration: 3. Tented arch.]

[Illustration: 4. Loop.]

[Illustration: 5. Loop.]

[Illustration: 6. Central pocket loop.]

[Illustration: 7. Plain whorl.]

[Illustration: 8. Double loop.]

[Illustration: 9. Double loop.]

[Illustration: 10. Accidental.]

Interpretation

Before pattern definition can be understood, it is necessary