In his forays in alchemy (or rather in his unwitting efforts to turn alchemy into a legimate science---chemistry) Newton lacked the tools to investigate the nature of substances such as we see common in chem labs today, so he used his own taste buds to establish quality of substances, such as arsenic, lead, and other choice poisons. Is this true?

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P.S. I keep clicking on "Start New Topic" for this column (Other Scientists and geniuses) but no empty workbox would pop up. I'd like to start one on Alan Turing, Wittgenstein, Fracis Bacon, Ramanujan, etc. help pls?