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aspirin ’s origin goes back at least as early as 1758. in that year, 2. an englishman edward stone noticed a distinctive bitter flavor in the bark 3. of the willow tree. to stone, this particular bark seemed to have much 4. in common with “peruvian bark”, which had been used medicinally 5. since the 1640s to bring down fevers and to treat malaria. stone 6. decided to tes t the effectiveness of the willow bark. he obtained some, 7. pulverized it into tiny pieces, and conducted experiments on its 8. properties . his tests demonstrated that this pulverized willow bark was 9. effective both in reducing high temperatures and in reliev ing aches and 10. pains. in 1763, stone presented his findings to the british royal 11. society. 12. several decades later, further studies on the medicinal value of the 13. willow bark were being conducted by two italian scientists. these 14. chemists, brugnatelli and fontana, determined that the active chemical 15. that was responsible for the medicinal characteristics in the willow bark 16. was chemical salicin, which is the active ingredient of today’s aspirin. 17. the name “aspirin” is the trade name of the drug bas ed on the 18. chemical salicin, properly known as acetylsalicylic acid. the trade 19. name “aspirin” was invented for the drug in the 1890s by the bayer drug 20. company in germany. the first bottles of aspirin actually went on sale 21. to the public just prior to the turn of the century, in 1899
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