Récréations arithmétiques
A French mathematical recreations book by Émile Fourrey, published in Paris by Librairie Nony in 1899, aimed at readers who enjoy arithmetic puzzles. The pictures are plain line diagrams: a dotted and solid network of points forming a pentagonal lattice, and concentric circles with numbers radiating from a centre, which a designer might use as stark geometric motifs for pattern or layout work.
