_The ~Ionick~ Pedestal, and the Way to shun another Difficulty in the
Elevations._
In Elevations of the Profile in Perspective, it may sometimes happen,
that the Visual LK may be so direct, as to render the Profile B too close
and narrow; wherefore prolonging the Ground-line from L to M, make the
Visual MN, which being much more oblique, does consequently render the
Profile C more broad and distinct.
And observe, that this Difficulty will very often occur; especially in
Figures that have many Lines, as the Forty-second Figure has, where I
speak also of the manner of avoiding the same.
Nor let it trouble you, that in this Figure I have plac’d the horizontal
Line below the Ground-line; which I have done, that you might see their
different Effects, and by changing the Disposition of your Designs,
improve and learn.