Mathematical essays and recreations

Schubert, Hermann, 1848-1911, McCormack, Thomas J. (Thomas Joseph), 1865-1932. tr · 1898 · Chicago, The Open Court Publishing Company; [etc., etc.] · 4 pictures

Hermann Schubert's popular lectures on magic squares, the fourth dimension, and squaring the circle, translated by Thomas J. McCormack and published by Open Court in Chicago in 1898 for general readers. Line figures show labelled point-and-line configurations, triangles and projective diagrams, plus a redrawn Dürer Melencolia engraving with its magic square, useful as geometric line art and numbered schematics.

Mathematics · Magic squares · Hyperspace · Circle-squaring

Internet Archive · Cornell University Library · Public domain (published before 1931) · More from this library