Radial. The thumb side of the hand (opposed to Ulnar.)
Recognition. An identification.
Recidivist. A relapsing or incorrigible criminal.
Ridge. A line of skin tissue, elevated, with sweat-pores.
Rod. A figure like a rod.
Rolled Print. A finger-print not taken by direct or plain impress, but by a revolution of the inked surface on flat paper.
Ruga (pl. Rugæ). A ridge.
Searcher. One who seeks for a former registration.
Sebaceous. Of the greasy excretion of the skin.
Smudge. A blurred or dull imprint.