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Jan 1, 1249
Spetacles
Roger Bacon invents spectacles -
Jan 1, 1489
Corpses
Leonardo da Vinci dissects corpses -
Jan 1, 1543
De Fabrica Corporis Humani
Vesalius publishes findings on human anatomy in De Fabrica Corporis Humani -
Microscope
Zacharius Jannssen invents the microscope -
Animal Heart
William Harvey publishes An Anatomical Study of the Motion of the Heart and of the Blood in Animals which forms the basis for future research on blood vessels, arteries and the heart -
Canine blood Transfusions
Sir Christopher Wren experiments with canine blood transfusions -
Blood cells
Anton van Leeuwenhoek discovers blood cells -
Bacteria
Anton van Leeuwenhoek observes bacteria -
Small pox inoculation
Giacomo Pylarini gives the first smallpox inoculation -
Small Pox
Persian physician Rhazes identifies smallpox