This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol6", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
Glaze the windows throughout except where otherwise described with 21-oz. sheet glass well sprigged, back puttied, and puttied in. The sash doors and fanlights to have 26-oz. sheet glass except as follows, and to be bedded in wash leather fixed with movable beads and brass cups and screws. Glaze the front door side and fan lights, door from hall to stoep and fanlight, and dining-room window with lead glazing p.c. 4s. 6d. per foot super.