crofton system

from The Collaborative International Dictionary of English v.0.48
Crofton system \Crof"ton sys"tem\ [After Sir Walter Crofton,
   Irish penologist.] (Penology)
   A system of prison discipline employing for consecutive
   periods cellular confinement, associated imprisonment under
   the mark system, restraint intermediate between imprisonment
   and freedom, and liberation on ticket of leave.
   [Webster 1913 Suppl.]
    

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