After the First Day of January One thousand eight hundred and fifty-nine, no Person shall hold any Appointment as a Physician, Surgeon, or other Medical Officer either in the Military or Naval Service, or in Emigrant or other Vessels, or in any Hospital, Infirmary, Dispensary, or Lying-in Hospital, not supported wholly by voluntary Contributions, or in any Lunatic Asylum, Gaol, Penitentiary, House of Correction, House of Industry, Parochial or Union Workhouse or Poorhouse, Parish Union, or other public Establishment, Body, or Institution, or to any Friendly or other Society for affording mutual Relief in Sickness, Infirmity, or old Age, or as a Medical Officer of Health, unless he be registered under this Act: Provided always, that nothing in this Act contained shall extend to repeal or alter any of the Provisions of the Passengers Act, 1855.