and custody of mental patient exist; and (c) in other cases, in the District Prisons. (ii) When a mental patient is detained in a prison, the Superintendent should make adequate arrangements for the comfort and care of the mental patient, having regard to his class and status in life. He should as far as possible be kept separate from convicted prisoners. Detention of non-criminal patients; procedure when period expires. Rule438. The maximum period during which a noncriminal mental patient can be detained for observation is thirty days. On expiry of this period, the Superintendent shall address the Coordination Officer or officer under whose warrant the person is detained pointing out that the authorised period of detention has expired and requesting that an order for the release of the person detained or his transfer to a mental hospital be furnished. If within the next seven days, the Superintendent has not received the court's order, he shall report the matter to the Inspector-General. Maintenance charges of non-criminal mental patient. Rule439. Non-criminal mental patients shall be entirely excluded from all statistical returns relating to prisons. Their maintenance charges for the period of observation shall be borne by the Prison Department. If the patients, after the period of observation are duly certified and reception orders issued, then the cost of maintenance from the date of the reception orders shall be met by the Health Department, even though the patients be detained in prisons. Classification of criminal mental patients. Rule440. The term "criminal mental patient", shall 'include persons of the following classes:(i) An accused person, in respect of whose soundness of mind doubts are entertained by the Magistrate trying the case, and who is sent to a prison for medical observation, under section 464 of the Code of Criminal Procedure; (ii) an accused person, who by reason of unsotrndness of mind, is incapable of making his defence, and who is in consequence, detained under section 466 of the Code of Criminal Procedure, pending the orders of the Government; (iii) a person who is held to have committed an act which would have constituted an offence but for the unsoundness of his mind, and who has been 153