the power to direct, as occ asion may require, the transfer of Insular prisoners between Insular penal institutions, or from an Insular penal institution to a provincial prison, or  vice versa . The expenses of such transfers shall be borne by the Bureau of Prisons, except the cost of escort service rendered by the Constabulary. [1703-10.] Prison Régime in General  SECTION  1925 . Detail of Prisoners to Public Works. — The Governor-General may, from time to time, detail Insular prisoners to work in any part of the Islands upon any public work not within the purview of section one thousand nine hundred and twenty-nine h ereof; and the Secretary of Public Instruction shall fix the terms and conditions upon which any branch of the Government may receive the labor of such Insular prisoners. [1703-12.] SECTION  1926 . Regulations of Bureau of Prisons . — The regulations of the Bureau of Prisons shall contain such rules as will best promote discipline in all Insular and provincial prisons and penal settlements and best secure the reformation and safe custody  of prisoners of all classes. [1407-25 ( b ).] SECTION  1927 . Duty of Prison Authorities to Enforce Sanitary Orders of Director of Health . — The officers in charge of all prisons, penal settlements, jails, and other places of confinement shall comply with and cause to be executed all sanitary orders, an d put into force all sanitary regulations issued by the Director of Health for their several institutions. [1407-s ( c ).] SECTION  1928 . Mode of Treatment of Prisoners . — Prisoners shall be treated with humanity. Juvenile prisoners shall be kept, if the jail will admit of it, in apartments separate from those containing prisoners of more than eighteen years of age; and the diff erent sexes shall be kept apart. The visits of parents and friends who desire to exert a moral influence over prisoners shall at all reasonable times be permitted under proper regulations. [413-12.] Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011 571 ARTICLE  II