Books author - "United States. Federal Bureau of Investigation"
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:
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: