The Nuttall Encyclopedia
The symbol of authority in the House of Commons; is placed on the table when the House is sitting, and is under the table as a rule when the Speaker is not in the chair.
Wood, James, ed. Entry for 'Mace, the'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/m/mace-the.html. Frederick Warne & Co Ltd. London. 1900.