The Undulate Line
No. 202. Growth Line based on Geometric Curves.
Intersecting straight lines form the basis of the different chequered patterns in conjunction with the simple device of alternating light and dark masses. Interlacing patterns are also based on intersecting straight lines. When segmental curves are employed either the chequered or interlacing effect may be obtained. Such patterns are essentially geometric and mechanical, but some idea of the growth line is suggested by the undulating stems formed out of the arcs of circles struck from either side of the border. This effect may be used with purely artificial detail, such as arises naturally from the spaces left, or with the introduction of floral detail. It is evident that the curve of the undulating stem will vary according to the position of the centres from which the arcs are struck.
No. 203. Brocade composed of Undulate Borders.
A fuller effect, giving more space for branching and other detail, will be obtained by basing the stem upon
No. 204. Scroll Border based on Adjacent Circles.
No. 205. 14th Century Textile composed of Undulate Borders arranged obliquely.
a series of complete adjacent circles struck within the border. The latter device is the basis of the wave line, which, after all, is only the key or labyrinth with the square angles rounded.
No. 206. French Brocade, 18th Century, composed of Borders.
Border decoration can also consist of leaves or other details symmetrically arranged on a central axis, with perhaps occasional flowers or rosettes to break the monotony.