25. Some brick are wider upon one side than the other, due to the slight batter of the vertical surfaces of the molds to permit the removal of the brick. In this case, the brick may be laid flat, if the wider side is laid at the top, automatically producing the desired result. Other brick have both the face and the cull surfaces parallel but sloping at a slight angle
from the sides. The brick may be laid flat but with the facc so placed that the upper edge projects beyond the lower edge.
26. Some bricklayers claim that they can tell by the feel of the brick the proper side to select for the top and turn the brick to the right position while it is in motion from the scaffold to the wall, doing this almost unconsciously from practice.
I thought this was rolling the wall
No wait, here it is
23. Roll.-As the top edge of the brick is always laid to the line, it is this edge which should be the most prominent upon the face of the wall so that one looking up from the ground will see the upper edges projecting slightly beyond the lower edges of the brick, forming a series of parallel lines for each course. This tends to hide any irregularities on the facf of the brick, giving the entire wall the appearance of careful and accurate workmanship. In order to accomplish this, it is necessary to give the brick a slight "roll," that is, to slope the brick so as to bring the bottom edge slightly in from the line of the wall.