parsey's

Updated: February 18, 2026

While these papers were in process of publication "Kata Phusin" plunged into his first controversy, as an opponent of "Parsey's Convergence of Perpendiculars," according to which vertical lines should have a vanishing point, even though they are assumed to be parallel to the plane of the picture.

W. G. (William Gershom) Collingwood - The Life of John Ruskin