386 



PERSPECTIVE. 



centre of the picture; tlieii, to find the other side, 

 lay off' F G equal to the distance of tlie picture, 

 which, as before, depends upon taste only; draw 

 B G and G A perpendicidar to B G, cutting the 

 horizontal line in A, the other vanishing point. 

 Draw now E A for the other side. To cut off" the 

 several widths of the two sides of the house, which 

 as yet are only drawn to an indefinite extent, two 

 distance-points must be laid down, viz. one for each 

 vanishing point. To do this, extend the compass 

 from B to G, and lay the distance taken in it fiom 

 B to H, which will give H for the distance-point of 

 B, and which is to cut off all the divisions on the 

 side E B. Also extend the compasses fi'om A G,. 

 .^nd lay down A I. I is the distance-point of A, 

 and is used for transferring all divisions upon the 

 side E A, from the ground-line C E, These points^ 

 and lines being adjusted, the process is not much 

 different from parallel perspective ; only here, equal 

 divisions on each side of the building, as doors, win- 

 dows, diminish as they recede, in the same way as 

 on the side B E F C, PI. 6. Fig. 1. Take the real 

 length of the side E L, from the same scale used for 

 laying down the horizontal line, and lay it down on 

 the ground-line from E to C, and draw^ C I, cutting 

 off E L for the perspective length of the building. 

 For the other side of the house, lay its widtli down 

 in the same manner, from E to D, and draw D H, 

 cutting off E N for the perspective width. Raise 

 the perpendiculars EM, L K, and N O, for the 

 three angles of the house. Lay the height of the 

 building upon the corner that comes to the ground- 

 line, as E M, and draw MK and M O to their several 

 vanishing points. Also lay all the heights of the 

 doors and windows, and other divisons, upon E M, 

 and draw them to the vanishing points A and B. 



