Rowbotham, Thomas Leeson, 1783-1853, Rowbotham, Thomas Charles Leeson, 1823-1875 · London : Winsor and Newton · leaf 27
HORIZONTAL LINE. 25 what is called "a bird's-eye view" will be the conse- quence. (Fig. 6), In the following example, the horizontal line is drawn at nearly half the height of the paper. FIG. 6. … We may here incidentally observe, that, as a general rule, the sketcher will find it advantageous, after having drawn a faint horizontal line, at its proper height, to ascertain, by holding up his pencil horizontally on a level with his eye, what object, or part of an object, appears on that point…
Landscape drawing · Landscape painting
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.