Graphics : a manual of drawing and writing, for the use of schools and families (1838)
Peale, Rembrandt, 1778-1860, author · Philadelphia : J. Whetham · leaf 28
22 MANUAL OF DRAWING. « PROPORTIONS OF LINES. … After drawing straight lines with accuracy, it is neces¬ sary to habituate the eye to measure their proportions. For this purpose, without any marked limits, draw lines parallel with each other, so that they might come within a square ; or be of one half, third, fourth, or fifth of any given line —…
Drawing -- Study and teaching · Penmanship -- Study and teaching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
