• Carte représentant pour l'année 1858 les émigramts du globe | Charles Joseph Minard

    Carte pour l’année 1858 des émigrants du globe | Charles Joseph Minard

    This map charts the numbers and destinations of emigrants from Europe, Africa, China, and South Asia for the year 1858. Minard correlates the thickness of each line with the number of emigrants it represents, with one millimeter equalling 1,500 people. He also overlays the exact number of emigrants and adds a color-coding system to further ease the identi...

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    Notes on Matters Affecting the British Army | Florence Nightingale

    Florence Nightingale, a pioneer of modern professional nursing, represented in this graphic the number of soldiers that died in the hospital that she managed during the Crimean War, from 1854 to 1856, and their cause of death. With this graphic she showed that the main causes of mortality were preventable illness- es, and this led to improvements in the h...

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    • On the mode of comunication of Cholera | John Snow

    On the mode of comunication of Cholera | John Snow

    Physician John Snow is the protagonist of one of the most famous episodes of science in the 19th century, which has been narrated on numerous occasions. A devastating outbreak of cholera in London’s Soho in 1854 offered him the chance to collect data in the field to understand how the disease was transmit- ted. Snow demonstrated, against the prevailing op...

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    • Ars Brevis | Ramon Llull

    Ars Brevis | Ramon Llull

    The Ars Brevis is a shortened version of the Ars, Ramon Llull’s magnum opus. He wrote it so that students starting to study his Art could grasp Llull’s entire system without logical and theological aspects hindering them. In this circular figure, the subject is transformed into predicate and vice versa. The scholar of the Art seeks the natural conjuncti...

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    • Arbor Scientiae | Ramon Llull

    Arbor Scientiae | Ramon Llull

    Arbor scientiae is a compilation of 16 trees, the aim of which is to enable the comprehension of universal knowledge, art and science. It is formed by eigh- teen roots that point to the transcendental principles and those of art and six- teen branches that represent the different fields of science. The book also in- cludes trees that are grouped according ...

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