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| 1214 | Birth England Bacon, Roger |  |
| Ilchester Birth of Roger Bacon, also known as Doctor Mirabilis (Latin: "wonderful teacher"), was one of the most famous Francis can friars of his time |
| 1268 | Publication England Bacon, Roger | |
| Publication of, "Opus majus" for Pope Clement IV |
| Publication of, "Opus tertium" for Pope Clement IV |
| 1277 | Arrest England Bacon, Roger | |
| The Condemnations of 1277 ban the teaching of certain philosophical doctrines, including deterministic astrology |
| The Condemnations of 1277 ban the teaching of certain philosophical doctrines, including deterministic astrology |
| 1278 | Arrest England Bacon, Roger | |
| Imprisoned for witchcraft for 10 yrs, placed under house arrest by Jerome of Ascoli, the Minister-General of the Francis can Order |
| 1294 | Death England Bacon, Roger | |
| 11th June Death of Roger Bacon |
| 1597 | Publication England Bacon, Roger | |
| Bacon is the ascribed author of the alchemical manual Speculum Alchemiae, translated into English as "The Mirror of Alchimy" in 1597 |
| 1610 | Birth England Pell, John | |
| 1st Mar Southwick Birth of John Pell |
| 1631 | Discovery of Algebra England Oughtred, William | |
| Proposes the symbol x for multiplication |
| 1634 | Publication England Pell, John | |
| Publication of, "Astronomical History of Observations of Heavenly Motions" |
| Publication of, "Ecliptica prognostica" |
| 1646 | Publication England Pell, John | |
| Publication of, "Controversy with Longomontanus" |
| 1650 | Publication England Pell, John | |
| Publication of, "An Idea of the Mathematics, I2iflO" |
| 1654 | Political Agent England Pell, John | |
| Appointed Oliver Cromwell's political agent to the Protestant cantons of Switzerland |
| 1666 | Invention Calculus England Newton, Isaac | |
| Invents Calculus |
| 1668 | Publication England Pell, John | |
| Publication of, "Translation of Rizonius's Algebra" |
| 1672 | Publication England Pell, John | |
| Publication of, "A Table of Ten Thousand Square Numbers" |
| 1685 | Death England Pell, John | |
| 11th Dec Death of John Pell |
