Unknown. (page 457)

Emil von Behring, German immunologist and bacteriologist, 1902 Unknown

Justus von Liebig, German chemist, c1860 Unknown

Armour Company's pig slaughterhouse, Chicago, Illinois, USA, 1892 Unknown

Ilya Ilich Mechnikov, Russian microbiologist Unknown

Humphry Davy, British chemist, 19th century Unknown

Fossil hunting in Cherry Hinton chalk pit, Cambridgeshire, 1822 Unknown

Edward Jenner, English physician, 1800 Unknown

Inside a Cheshire salt mine, 1889 Unknown

Ffestiniog Railway steam Locomotive No 8 James Spooner, 1872 Unknown

Patagonians at Gregory Bay, 1831 (1839) Unknown

A meeting of the Royal Society in Crane Court, Fleet Street, London, 18th century (c1880) Unknown

Don John of Austria, 16th century Spanish soldier, 17th century Unknown

Jules Verne (1828-1905), Autour de la Lune, 1865 Unknown

Title page of Oeuvres de Pierre Curie, 1908 Unknown

Clinic at the School of Dentistry, Paris, 1892 Unknown

Ancient Egyptian cosmos, c1025 BC Unknown

James Watt's workshop at Heathfield Hall, Birmingham, 1886 Unknown

Georgius Agricola, 16th century German physician, mineralogist and metallurgist Unknown

Facsimile or copying telegraph system by Amstutz of Cleveland, Ohio, USA, 1896 Unknown

Spitalfields silk worker winding silk in her cottage, London, England, 1893 Unknown

Pithead at Hebburn Colliery, Newcastle-upon-Tyne area, 1860 Unknown

Longitudinal section of a steam turbine fitted into the Dover packet boat Queen, c1904 Unknown

Steam turbines fitted into the Dover packet boat Queen, 1904 Unknown

Dmitiri Ivanovich Mendeleyev (1834-1907), Russian chemist, c1900s Unknown

Friedrich August Kekule von Stradonitz, German organic chemist, c1885 Unknown

Thomas Henry Huxley, British biologist, at his desk, c1880 Unknown

Joseph Louis Gay-Lussac, French chemist and physicist, c1860 Unknown

James Gregory, 17th century Scottish mathematician and astronomer Unknown

Denis Papin, French physicist, 1870 Unknown

Medal commemorating Marie Sklodowska Curie, Polish-born French physicist, 1967 Unknown

Natives of Chiloe, Patagonia, using a breast plough, 1839 Unknown

Urania, the Muse of Astronomy, weighing and comparing systems of the universe, 1651 Unknown

Courting by telephone across Paris, 1883 Unknown

Edward The Confessor, Anglo-Saxon king of England, 1070s Unknown

Illustration from De la Terre a la Lune by Jules Verne, 1865 Unknown

Eddystone Lighthouse, c1850 Unknown