Translated into ink, this process of layering lines becomes a process of layering many coats of ink wash.
Wall Drawing 414, on the other hand, is based on a version of the drawing series where the artist superimposed the four types of lines on top of each other. The former wall drawing mimics a colored pencil iteration of the drawing series where the lines are simple, or unlayered. While Wall Drawing 413 illustrates the drawing series in color, Wall Drawing 414 illustrates the series in gray ink washes. In Drawing Series IV, LeWitt used the ∜ross Reverse method of change, in which the parts of each of the original units are crossed and reversed.
The result is four possible permutations for each of the twenty-four original units, which are presented in a grid of twenty-four sets of four squares, each divided into four equal parts. In each series he applied a different system of change to each of twenty-four possible combinations of a square divided into four equal parts, each containing one of the four basic types of lines LeWitt used. Between 19 LeWitt created four drawing series on paper. Canson Illustration 250 g/m2 - fine grained cold pressed Black India ink Pencils and paintbrushes: 1 0.5 HB mm mechanical pencil, 1 medium Japanese. Wall Drawing 414 and the drawing located on the opposite wall, Wall Drawing 413, are both iterations of LeWitt’s Drawing Series IV. LeWitt frequently applied the same systems he had used when working with pencil to the new medium. The technique gives the works a fresco-like quality. The ink is applied with soft rags and dabbed onto the walls. In the early 1980s Sol LeWitt began to use India ink and colored ink washes.
Drawing Series IV (A) with India ink washes.