Rowbotham, Thomas Leeson, 1783-1853, Rowbotham, Thomas Charles Leeson, 1823-1875 · London : Winsor and Newton · leaf 37
33 HORIZONTAL LINES. The apparent increase of dimension of a d, when raised from its horizontal position^ having been shown, the manner of determining the length of this side of the folio, when lying flat, is as follows : FIG. 18. … I J a Having drawn (Fig. 1 8) the horizontal line through the centre of view C, and the edge of the folio parallel to it, and having marked the centre of view as at C, set off C E on the horizontal line, at a distance from C equal to the supposed distance of the eye from the point C It has been…
Landscape drawing · Landscape painting
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
