As the mode of dealing with those insane persons who have committed offences bringing them under the authority of the criminal law differs in some respects from the practice followed in the case of the ordinary or non-criminal insane, I thought that on the occasion of the visit of the South-Western Division of the Medico-Psychological Association to this Asylum a brief outline of the history of the arrangements for the care and supervision of the criminal insane in England might perhaps be of interest to those members who have honoured Broadmoor with a visit to-day.