Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 61
Let the learner stand ILLUSTRATED LONDON DRAWING-BOOK. at the end of an apartment, and note the direction of the lines of the ceil-ing, walls, and floor. He will find that those lines which are as highfrom the floor as his head are level or horizontal; those of the ceiling, … fig. 4. which are above it, slope downwards as they recede from him; those ofthe floor, which are below it, slope upwards. The degree of this slope orinclination increases near the ceiling and floor, and continues to do sotill, at one part of the room, the lines assume a vertical position ;…
Drawing · Wood-engraving
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
