39. For the purposes of this Part, "sick leave"

means a period during which a police officer is permitted, on ac­

count of illness, to be absent on full pay from duty without forfeiting leave of any other description, provided that the appropriate

Medical

Officer certifies that the sickness is not purposely self-inflicted or due to irregular or intemperate habits, or, if venereal, has not been concealed or aggravated by any act or default of the officer.