The art of drawing in perspective made easy. To those who have no previous knowledge of the mathematics / By James Ferguson ... Illustrated with plates.

  • Ferguson, James, 1710-1776.
Date:
1775
Catalogue details

Licence: Public Domain Mark

Credit: The art of drawing in perspective made easy. To those who have no previous knowledge of the mathematics / By James Ferguson ... Illustrated with plates. Source: Wellcome Collection.

    92/154 (page 82)
    ■ - ' '• • | I . , ' ! • ' . - . 82 PERSPECTIVE fer fquares, as a iN, NieD, aBk i, and i k C e. From the point C (at the top of the perfpe&ive fquare ABCD) draw CP to the point of diftance P, interfering AS in E; then, from the point E draw EF parallel to AD’, and you will have the fecond perfpeclive fquare BEFC. Through the point I, where CE in- terfers NS, draw bf parallel to AD; and you will have fubdivided the fquare BEFC into the four fquares B b Ik, k If C, b Em l, and ImFf. From the point F (at the top of the perfpeftive fquare BEFG) draw FP to the point of diftance P, interfering AS in I then, from the point / draw IK