This section is from the book "A Treatise On Architecture And Building Construction Vol2: Masonry. Carpentry. Joinery", by The Colliery Engineer Co. Also available from Amazon: A Treatise On Architecture And Building Construction.
273. Stud partitions in brick buildings, and the space between the outside studs in wooden houses, are often filled in with brickwork, to obstruct as much as possible the passage of fire, sound, and vermin. As there is no special weight placed on the brick, the cheapest kind of brick may be used for this purpose, such as the pale or salmon brick from the outer portion of a brick kiln. The brick should be laid in mortar as in a 4-inch brick wall.
When the wall is lathed with wooden laths, there should be a small space left between the brick nogging and the lath, so that the plaster will have a sufficient clinch behind the lathing.