Grundriss der Naturlehre in seinem mathematischen und chemischen Theile
Friedrich Albrecht Carl Gren's Grundriss der Naturlehre, published in 1793 by Hemmerde und Schwetschke, is a German textbook of natural philosophy covering mathematics and chemistry for students. Its pictures are dense geometric diagrams of rays, circles, lenses and angles, with lettered points and figure labels, offering a designer tidy technical linework and a plain engraved precision.
