Formerly titled "Dynamarhythmic Design", which was originally published by The Century Company in 1932. Includes appendix.
Mr. Edwards uses rectangles of differing proportions and the diagonals, reciprocals, triangles, and logarithmic spirals inherent in them to construct the over 115 designs shown in this book. Also supplied are mathematically exact diagrams to facilitate the making of eight different logarithmic-spiral drawing tools... Unabridged, unaltered republication of 1st (1932) edition of "Dynamarhythmic Design. 82 figures. 29 plates. Appendix by R. Albrecht Carrie, mathematically locating, within a rectangle, the point of contact of the logarithmic spiral. -- Back cover.