Upon the receipt of a condemned person by the warden of Holman prison, he shall be confined therein until the time for his execution arrives; and, while so confined, all persons outside the said prison shall be denied access to him, except his physician and lawyer, who shall be admitted to see him when necessary to his health or for the transaction of business, and the relatives, friends and spiritual advisors of the condemned person, who shall be admitted to see and converse with him at all proper times, under such reasonable rules and regulations as may be made by the Board of Corrections.