As the possibilities of this ornamental feature became better understood, the mullions were recessed from the face of the wall and the fine effect thus produced was, as the art progressed, much enhanced by the introduction of various orders of mullions, and by Recessing certain portions of the tracery from the face of the mullions and their corresponding bars.
"Our Homeland Churches and How to Study Them"
Sidney Heath
The smoke shelf comes immediately above the throat and is formed by Recessing the brickwork of the back the full width of the chimney for at least four inches.
"If You're Going to Live in the Country"
Thomas H. Ormsbee and Richmond Huntley
But C, being cut on each side, could be used singly for grooving or Recessing, or for plain milling, or in the position of B or A in the figure; hence it is preferable in gang milling for general purposes to provide teeth on both sides as well as on the circumference of the mill or cutter.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose