69. (1) Whenever any justice or justices of the peace admit to bail any person who is then in any house of detention charged with the offence for which he is so admitted to bail, such justice or justices shall send to or cause to be lodged with the keeper of such house of detention, a warrant of deliverance, under his or their hands, requiring the said keeper to discharge the person so admitted to bail if he be detained for no other offence; and upon such warrant of deliverance being delivered to or lodged with such keeper, he shall forthwith obey the same.
(2) Such warrant of deliverance may be as in form 27.