Micrometer. An instrument like a pair of compasses, used for fine measurements.
Mirror Pattern. The reverse (exact) image of a given figure.
Negative. A print in which the ridges are white and furrows black, as when smoked glass is used.
Palmar. Of front surface of the hand.
Papilla (pl. Papillæ). Elements in a ridge where touch organs are.
“Photograph.” Used sometimes legally for finger-prints.
Pocket Loop. A variety of imperfect loop.
Positive. A finger-print where ridges appear black (or other colour of pigment used) and furrows are white.
Primates. An order of animals, including lemurs, monkeys, apes, and man.