An introduction to the study of Gothic architecture (1891)
Parker, John Henry, 1806-1884 · Oxford ; London : J. Parker · leaf 68
r the pier-arches, or over windows, wall arcades, &c., and frequently also as horizontal strings or tablets. One of the most usual and characteristic ^^■orman strings exactly resembles the abacus of the ca- pital, or the impost of the pier, with a hollow chamfer under it; another is merely… … third century, CHevron, or zig-zag, Beaa». and probably earlier, but in all early work it is used
Architecture, Gothic
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.