MSC 316 Lecture Notes - Lecture 2: Reduction Potential, Phytoplankton, Sulfur
13 Sep 2016
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Decided that plants must take in air. Stahl said that phlogiston is produced by burning: reasons: Weight loss occurs when combustibles are burned because they lose phlogiston. Fire burns out in an enclosed space because air becomes saturated with phlogiston. Charcoal leaves little residue after burning because it is made of phlogiston. Animals die in an airtight space because air becomes saturated with phlogiston. Some metal oxides turn to true metals when heated with charcoal because charcoal restores phlogiston: problem: The first point is in conflict with the last point. Metals increase in weight when they are restored with phlogiston . Jan ingen-housz: in 1779 wrote a treatise about his experiments, performed over 500 experiments that show plants depend on sunlight, oxygen, and take up co2 to produce organic matter, published paper that said plants respire. Julius sachs (1862) breslau: showed that starch grains are carbohydrates.
