Démonstrations Géométriques, des Sphères Droite, Paralelle, et Oblique: Brion de la Tour c. 1770

Title: Démonstrations Géométriques, des Sphères Droite, Paralelle, et Oblique Author: Louis Brion de la Tour Date: c. 1770 Medium: Hand-colored copperplate engraving Condition: Very Good - foxing and age toning, paper loss in left margin, tide marks in lower corners Inches: 14 1/8 x 11 1/8 [Paper] Centimeters: 35.88 x 28.26 [Paper] Product ID: 102029 "Geometric Demonstrations of Straight, Parallel, and Oblique Spheres" Image depicting the axes of the earth as viewed from different perspectives. Includes a compass rose at center and a diagram of the refraction of sunlight. Background on Creator Louis Brion de la Tour (circa 1743–1803) was a prominent 18th-century French geographer and demographer who held the official title of “Ingénieur Géographe du Roi,” or King’s Engineer Geographer. Although little is known about his early life, Brion de la Tour gained recognition for his prolific output of maps and atlases—his most notable work being the “Atlas Général,” published