bertillonage

Bertillonage is an English borrowing from French bertillonnage, a noun built on the surname Bertillon. It refers to the identification system created by Alphonse Bertillon in Paris in the 1880s. His method combined body measurements, photographs, and standardized records to identify repeat offenders. The word entered English with the inventor's name still visible inside it.

Alphonse Bertillon was born in 1853 and began work at the Paris Prefecture of Police in 1879. In 1883 he introduced anthropometric identification, measuring the head, limbs, and other body parts on the assumption that the adult skeleton was stable enough for classification. French named the system bertillonnage after him, using the productive suffix -age for a method or practice. The eponym was direct and contemporary, not a later invention.

The term spread quickly across Europe and North America in the late nineteenth century. English newspapers, police manuals, and criminology texts used bertillonage for the French system and for local adaptations of it. By the 1890s the word often appeared beside signalment, mug shot, and anthropometry in police writing. Its rise matched the rise of bureaucratic identification.

Bertillonage began to fade after fingerprinting proved simpler and more reliable in police work during the early twentieth century. The word survived in historical writing because it names a distinct stage in the history of surveillance and forensic administration. In English it now sounds period-specific, tied to the age of dossiers and calipers. The name of Bertillon became the name of his method.