An introduction to projective geometry and its applications; an analytic and synthetic treatment
A 1905 university textbook on projective geometry by Arnold Emch, issued by John Wiley in New York and Chapman & Hall in London for mathematics students. The 106 line diagrams show triangles, conics and pencils of rays in fine black line with dashed construction lines, lettered points and hatched or line-shaded planes — usable as geometric linework, pattern fill and technical ornament.
