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)

6

PERSPECTIVE..

the line He, continuing it till it touch the base line in the
point 1 ; next measure off along the base line the distance

2,3,4 from the point 1, the first being equal to the
distance between the corner of the house c and the door,
the second equal to the breadth of the door-way, and the
third equal to the distance between the door-way and the
farther corner/: next draw the vanishing lines H 2, H 3,
and H4, where the point in which H2 intersets Gc will
be the nearest corner of the door-way, where H 3 inter-
sects the same line, the farthest corner of the door-way,
and where H4 intersects Gc, the farthest corner of the
house, whilst cf will be the bottom of the house end,
the line cG giving the top of the door-way; next draw
the linefg, after which there only remains the peak of
the gable to finish the house end entirely: In order to
find this, first draw the two diagonal lines afgc, the
intersection of which will give the centre of the house
end, and through which must be drawn the line xz. As
this line passes through the centre of the house end, it
will of course pass through the peak of the gable, which
is likewise over the centre of the house end, so that all