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  2. List of Puerto Rican scientists and inventors - Wikipedia

    en.wikipedia.org/wiki/List_of_Puerto_Rican...

    Stahl wrote "Estudios sobre la flora de Puerto Rico" (A study of the Puerto Rican Flora), published in six fascicles from 1883 to 1888. Copies of his plant collection with approximately 1,330 plants can be found in various botanical gardens around the world.

  3. Medicinal plants - Wikipedia

    en.wikipedia.org/wiki/Medicinal_plants

    Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including defense and protection against insects , fungi , diseases , against parasites [ 2 ] and herbivorous mammals .

  4. Frederick McKinley Jones - Wikipedia

    en.wikipedia.org/wiki/Frederick_McKinley_Jones

    Frederick McKinley Jones (May 17, 1893 – February 21, 1961) was an American inventor, entrepreneur, engineer, winner of the National Medal of Technology, and an inductee of the National Inventors Hall of Fame. [1]

  5. Science and inventions of Leonardo da Vinci - Wikipedia

    en.wikipedia.org/wiki/Science_and_inventions_of...

    Pacioli, who first codified and recorded the double entry system of bookkeeping, [24] had already published a major treatise on mathematical knowledge, collaborated with Leonardo in the production of a book called De divina proportione about mathematical and artistic proportion. Leonardo prepared a series of drawings of regular solids in a ...