Fingerprint Sciences: Henry Classification System Basics

UGC-NET Forensic Science Unit VIII drill on fingerprint classification fundamentals. Covers the three principal pattern types (arch, loop, and whorl) and their approximate frequency in the Indian population, sub-pattern distinctions such as plain arch versus tented arch, ulnar versus radial loop, and the four whorl sub-types (plain whorl, central pocket loop, double loop, accidental whorl), core and delta anatomy, ridge counting in loops from delta to core, ridge tracing in whorls from left delta to right delta yielding Inner/Meeting/Outer tracings, the Henry primary classification formula using even-fingered and odd-fingered whorls, sub-secondary and final divisions, Galton points and the six minutiae types (ridge ending, bifurcation, dot, island, enclosure, spur), pattern area boundaries defined by type lines, and a comparison of the Vucetich (Argentina, 1891), Henry (India/England, 1897), and Bertillon systems.

This mock targets aspirants preparing for UGC-NET Forensic Science Paper II and NFSU MSc Forensic Science entrance. The Central Fingerprint Bureau (CFB) under NCRB, established at Kolkata in 1897 and now operating from New Delhi, uses the Henry system and its extensions as the national classification standard. CFSL Chandigarh and State FSLs across India apply Henry-derived ridge counting and tracing methods for ten-print card filing. The Identification of Prisoners Act, 1920 provides the statutory authority for fingerprint collection in India, making knowledge of the Henry system directly relevant to Indian forensic law practice.

Topics covered:

• Three main patterns: arch, loop, and whorl with Indian population frequencies
• Plain arch vs tented arch; ulnar vs radial loop identification
• Four whorl sub-types: plain, central pocket loop, double loop, accidental
• Core and delta anatomy and their roles in classification
• Ridge counting in loops and ridge tracing (Inner, Meeting, Outer) in whorls
• Henry primary classification formula: even-fingered and odd-fingered whorl values
• Galton minutiae: ridge ending, bifurcation, dot, island, enclosure, spur
• Vucetich, Henry, and Bertillon system comparison; type lines and pattern area

Suitable for first-pass UGC-NET Forensic Science Paper II revision and NFSU MSc entrance preparation. Allow 30 minutes.