Page:The castellated and domestic architecture of Scotland from the twelfth to the eighteenth century (1887) - Volume 2.djvu/488

 FOURTH PERIOD 472 ABERDOUR CASTLE introduction of a corridor or passage on the ground floor leading to the kitchen and cellars is quite usual in earlier castles, but we have here also corridors on the upper floors, giving a separate access to the various apartments, an arrangement just beginning to be adopted in the Fourth Period.