Auguste Diego, Libraire / Chez l'Auteur, Éditeur / Imprimerie de Adolphe Wesmael, Fils, Bruxelles / Namur, 1865
24 x 17 cm, half leather binding with marbled boards, raised bands on spine with gilt decoration, xx, 404 pages, numerous geometric diagrams and illustrations in text, text in French, ex-libris stamp 'R.D.-E. Gelin' and institutional circular stamp on title page, author's signature on verso of half-title, some wear to boards and spine, still in very good condition, see picture.