(b) separate and cellular confinement as a person punishment; (c) the Medical observation of those suspected of being insane or the accommodation of noisy, dangerous or other mental patients whom it is advisable to keep apart. (d) the separation of prisoners: (e) the medical observation and segregation of prisoners suspected of malingering, causing sickness or injury to themselves or who are suffering from contagious or infectious diseases. (f) confinement of prisoners under sentence of death. (g) quarantine; and (h) confinement of prisoners on hunger strike. No prisoner to be placed in a cell without a written order: Rule625. No prisoner shall be placed in a cell either as punishment, or for segregation without the order of the Superintendent duly recorded on his history ticket. Cell tickets: Rule626. If a prisoner is confined in a cell by way of prison punishment, segregation under section 28, Prisons Act, 1894, or for any other cause, a cell ticket shall be posted outside the cell showing particulars of the prisoner. An officer to be within hearing of prisoners in cells. Visits: Rule627. Every prisoner confined in a cell shall invariably be in the immediate charge of a warder. The guards shall be so arranged and posted both by day and night that all prisoners in cells shall at the times have the means of communicating with a prison officer. Every prisoner so confined shall be visited by a warder on duty at least once an hour by day and night. The relieving and the relieved warder shall visit the cells together at every charge of guard to see that the correct number is confined therein and that all is well. 216