The design for (b) is normally worked with a running stitch (in Italian called punto a rammendo) in one direction only, often covering two meshes (squares) at a time. Another method is by using a linen stitch (Italian: punto a tela), which is closely darned in both directions so that several crossing threads occur within each mesh (square).
Also called: opus filatorim.
Source: EARNSHAW, Pat (1984). A Dictionary of Lace, Aylesbury: Shire Publications Ltd., p. 96-97.
Digital source of illustration (retrieved 6th July 2016).
GVE