Lower leg bones and ligaments Sympathetic nerves, upper body Durer's Celestial Globe, 1515 Villa Torrigiani, Camigliano village, Lucca, Tuscany, Italy, Europe Sir Walter Raleigh , English explorer Boring a hole Early escalator, 1894 Redshank, historical artwork 1920s television system, diagram Development of Arabic numerals Durer's world map, 1515 Galen lecturing on anatomy in Rome Medieval physician and pharmacist Muscles of the back Perpetual motion machine, 19th century Arabic science timeline Medieval urine wheel Pelvis bones and ligaments Table comparing ancient scripts Villa Torrigiani, Camigliano village, Lucca, Tuscany, Italy Africa, 16th century Spanish map Sacred lotus (Nelumbo nucifera) High-pressure steam engine, 19th century Hummingbirds, historical artwork Shoveler duck, historical artwork Egyptian and Assyrian counting systems Native American census roll, artwork Sir Isaac Newton, British physicist Tongue anatomy Tomato plant Faraday's electrolysis experiment, 1833 Standard electrical circuit symbols Newspaper printing press Measuring electric voltage Dolmen, Neolithic burial chamber 4500 years old, Pembrokeshire, Wales Carboniferous landscape Orbit of the Earth Splitting of wood log Guillaume Lemonnier1717-1799 Computer hard disk assembly 19th Century electrical equipment Steam-powered coach, 1829 Heron/Hero of Alexandria, mathematician Umbrella bamboo (Fargesia murielae) 16th century map of Sardinia cartouche Brain anatomy, 16th century diagram Medical zodiac, 15th century diagram Skull anatomy Page 1 Page 3