In 1795, French chemist Nicolas Conté developed a mixture of clay, graphite, and water that, when hardened, leaves a gray-black mark on paper. This is what is inside pencils … not lead. https://sciencing.com/uses-graphite-5670130.html What is graphite? Answer: a crystalline form of the element carbon consisting of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on a large scale for uses in pencils, lubricants, and electrodes. Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0; Locality: Old Beneis Farm Marlborough, Cheshire County, NH; https://commons.wikimedia.org/wiki/File:Graphite-233436.jpg See the 9/9/2022 #2 pencil numbered by Thoreau.
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