Sheraton, Thomas; Bensley, Thomas; Mathews, James; Bensley, Thomas [Bearb.]; Mathews, James [Bearb.]; Terry, George [Bearb.]; Jordan, Jeremiah Samuel [Bearb.]; Wayland, L. [Bearb.]: The Cabinet-Maker And Upholsterer's Drawing-Book: In Three Parts (London: Printed For The Author, By T. Bensley; And Sold By J. Mathews ... C. Terry ... J.S. Jordan ... L. Wayland ... And By The Author, 1793)

from c draw a parallel to e at pleafure. Take C D, the bevel of
the feat, and place it from a to J; and from d draw a line to j,
cutting c e at y, which gives the bevel of the feat. From a draw
a line through y, cutting the horizon at V, which will be the
vanifhing point to every line originally parallel to ay, the fide
rah ; take s V and place the fame fpace to u, which will be the
vanifhing point to the other fide of the chair; therefore from b
draw a line to u, cutting at e, which forms the feat. For the
thicknefs of the back rail, draw a line from p to the diflance, as
the figure fhews. For the height of the back, raife a perpen-
dicular a g, and draw a parallel from r to g; draw alfo a per-
pendicular fromy, and a line from g to V will cut it at f, de-
termining the height of the back. For the bottom of the
back foot, draw a line from u to the diftance, cutting a per-
pendicular from c at w. From w draw a parallel, and from z
draw a line to the vanifhing point V, cutting at zv, which will
determine the place of the back foot How every other part is
done, muff be evident from infpedting the figure. x
* The reader will perceive that the line from z to x is not accurately drawn, for the
engraver did not follow his copy, otherwife the line would have touched the bottom of the
back foot tending to V, which the learner may prove, by drawing a line from % to V. This
inftance may ferve to lhew the trouble there is with engravers, who in general are totally
■ignorant of perfpedive.
R r Example