G. T. HOARE is quite right in saying "that every line above or below the
line of the horizon, though _really_ parallel to it, _apparently_
approaches it, as it is produced to the right or left." But he seems to
forget that the same holds good in the picture as in the original
landscape, the part opposite the eye being nearer to it than the margin of
the paper. To produce the same effect with _converging lines_, the drawing
must be made to assume the form of a segment of a circle, the eye being
placed in the centre.