Are compartments to be filled up by various solid colours over which the scrollwork or ornaments are applied, either in white, gold, or colours; when in red, it is called damask-work, the patterns of which can be varied in endless variety. Over the gold, engravings with the agate are highly effective, sometimes forming simple ornamentations, or representing embossed chasing.
Fig. 4,
Represents a portion of a scroll to be filled in by a solid colour, over which, after being properly shaded, fine threads of gold may be drawn, or thinly dotted in white. In making these or similar scrolls, care should be taken that they are gracefully drawn, and made to run freely throughout the design.
Fig. 5,
Illustrates fragments of curves with leaves or ornaments which must be ruled-in with the ruling-pen, by the aid of the wooden scroll, the scroll being placed on the pencil-tracing, where a portion of its curve corresponds with the intended design.
Fig. 6,
Are two straight lines ruled parallel and closely together, so as to show a white thread between.
PLATE II,
Is the initial letter O, copied from a woodcut. Though the general design is effective and pleasing, it is not accurately drawn; whereas it might have been, had the designer used the tracing-paper. I have shown the defects in the outline, to illustrate a principle which should be always avoided, viz., disregard for the mechanical appliances, by means of repetition always at hand for the illuminator by using the red transfer paper.
This initial is very useful to copy frequently, since it will give freedom to the hand in producing graceful curves. The remaining figures on this plate are various initials, used at the head of texts; they may be variously illuminated.