Sports equipment and a cap pistol for my younger brother. There were the inevitable disappointments: sweaters from Grandma, school clothes from Aunt Betty, and hand-knitted stocking caps for both of us from Pete and Sarah, our elderly next-door neighbors. Being boys, we started tearing open the presents with no thought at all for the care that had gone into wrapping them. Colorfully wrapped presents were scattered-not just under the tree, but across most of the living room floor.
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My younger brother and I arose at the crack of dawn and noisily rushed downstairs to find out what was under the tree. Scheele died at age 43, apparently from mercury poisoning contracted as a result of his unfortunate habit of tasting the new compounds he prepared.Ĭhristmas morning, 1964. As a practicing pharmacist without access to the advanced laboratory equipment available to many of his contemporaries, Scheele discovered numerous chemical elements and compounds-including oxygen, nitrogen, chlorine, barium, manganese, molybdenum, tungsten, citric acid, glycerol, the pigment Scheele’s Green (cupric hydrogen arsenite), and many others-debunked the phlogiston theory, and was among the first to establish the rigorous, standardized, consistent quantitative procedures that are the hallmark of modern chemistry. To Carl Wilhelm Scheele, one of the first true chemists, who did so much with so little. DIY Science: Illustrated Guide to Home Chemistry Experiments: All Lab, No Lecture
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