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HENRY SYSTEM – devised by Edward Henry, the
fingerprint classification system that facilitated the
use of fingerprints in criminal identification;
adopted in England in 1900 and today used in
almost every country
HEROIN – one of the group of drugs called opiates,
which are derived from the opium poppy, a
depressant that affects the brain by slowing down
the activity of the central nervous system and
messages going to and from the brain.
HIATUS OR PEN JUMP – a gap occurring between a
continuous strokes without lifting the pen. Such as
occurrence usually occurs due to speed; may be
regarded also as a special form of pen lift distin-
guish in a ball gaps in that of perceptible gaps
and appear in the writing.
HIERARCHY – represent the formal relationship
among superiors and subordinates in any given
organization. It can be visualized as a ladder, with
each rung (or rank) representing a higher or lower
level of authority
HIGH EXPLOSIVES – explode under the influence of
the shock of the explosion of primary explosive.
They do not function by burning, in fact not all of
them can be ignited by a flame and in small amount
generally burn tranquilly and can be extinguished
easily. If heated to a high temperature by external
heat or by their own combustion, they sometimes
explode. Examples are Ammonium nitrate, TNT,
dynamite, nitroglycerine, picric acid, plastic
explosives.
162 | A T O Z I N C R I M I N O L O G Y