MINERALOGY. Handwritten notebook, Résumé de Minéralogie, mid-nineteenth century; in-12, 67 p., in tiny handwriting. Manuscript by a mineralogist, illustrated with numerous sketches of mineral structures, with technical details. For example: "Agate quartz. This variety must be posterior to the terrains in which it is found in veins or nodules, replacing organized bodies or other crystals. Ribboned agates are mostly found in red sandstones forming hard amygdaloid probably with porphyry"... Etc.