Smith, Thomas [Hrsg.]: The Art Of Drawing In Its Various Branches: Exemplified In A Course Of Twenty-Eight progressive Lessons, Calculated To Afford Those Who Are Unacquainted With The Art, The Means Of Acquiring A Competent Knowledge Without The Aid Of A Master ; Being The Only Work Of The Kind In Which The Principles Of Effect Are Explained In A Clear, Methodical, And At The Same Time Familiar Style. Illustrated With Coloured Designs And Numerous Wood Engravings (London, 1827)

PERSPECTIVE.

5

mark off the distances between the trees along the base
line, beginning at the point I, and proceeding in a diffe-
rent direction to the point of distance. Now as the base
line of the picture is not sufficiently long to take in
the 5th point, continue it to c, which will render it
long enough, and then draw lines from the distant point
H to the points 1, 2, 3, 4, 5, and the points in which
these lines intersect the line GI will be the places for
the trees.

Having drawn the nearest tree which stands on the
base line, draw from the top Z the line Z G, which will be
the line for the tops of the rest of the trees.

This problem is extremely useful in almost all the
other problems in perspective: it is by this rule that all
distances along any line may be found, such as the door-
ways and windows along the side of a street, or the piers
and width of arches of a bridge! &c. &c.

o 7

LESSON III.

To draw a House, one side of which is parallel to the

Picture.

Let ABC D be the picture*, EF the horizontal line, G
the centre of the picture, and H the point of distance:
First draw the square front of the house a,b,c,d with the
four windows in it, which, being parallel with the plane
of the picture, will have no vanishing lines ; this being
done, draw the vanishing lines aG, eG, cG, and then