Auguste Comte - Traité élémentaire de géométrie analytique à deux et à trois dimensions - 1843

Reference work by the founder of positivist philosophy, in which he discusses both plane geometry and spatial geometry.
598 pp. preceded by 8 pp. of the author's warnings + 3 fold-out plates comprising 82 figures.
Half-leather binding, smooth spine with gilt.
The spine is very damaged (top of the spine “repaired”, top of the joint split) but overall it remains perfectly cohesive. The top corner of the half-title page has been cut, but there is no loss of information. The interior is in excellent condition, with only a few foxing spots and damp stains.