79.  So far as may be reasonably practicable, and subject to the directions of a Superintendent as regards quantity, a person under detention may secure or purchase such luxuries, including clothing and tobacco, as are consistent with good order and discipline, provided that all such articles are received or bought through the Superintendent, who may impound any article the possession of which is prohibited by the rules of the place of detention or which, in his opinion, is likely to be dangerous to health or life or is likely to facilitate escape from the place of detention.