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Evaporating sea water in iron pots to obtain salt, 1556
 
Evaporating pots of brine in a natural hot spring to obtain salt, 1556
 
Producing salt by evaporating sea water in salt pans, 1556
 
The Cathedral, Marston Salt Mine, Northwich, Cheshire, England, 19th century
 
Rock Salt: Miners at work in salt mine near Cracow, Poland, c1820
 
Rock Salt: Miners at work in salt mine, Wieliczka, Galicia, Poland, 20th century
 
Rock Salt: Refining salt, Northwich, Cheshire, England, c19th century
 
Ignaz Philip Semmelweis (1818-1865), Hungarian obstetrician, 19th century
 
Jean Bernard Leon Foucault (1819-1868), French physicist, 19th century
 
Georgius Agricola, 16th century German physician, mineralogist and metallurgist
 
Ferdinand Magellan (c1480-c1521), Portugese navigator
 
Jean Baptiste Lamarck, (1744-1829), French naturalist
 
William Harvey (1578-1657) English physician, c17th century
 
William Harvey (1578-1657) English physician, c17th century
 
William Harvey (1578-1657) English physician, c17th century
 
First lockstitch sewing machine, invented by Elias Howe, c19th century
 
Elevated Railway in New York, from The Picture Magazine, c19th century
 
Karl Guthe Jansky, American physicist and radio engineer, c1940
 
Albert Einstein (1879-1955), mathematical physicist, c1979
 
Petrol-driven car by Benz & Co., capable of 16 km per hour, c1890s
 
Physician examining a specimen of patient's urine, c.1600 (19th century)
 
Astrolabe, Arabian navigational instrument, 11th century
 
Symptoms of the tertiary phase of syphilis, c19th century
 
Members of the French air corps on bomb practice at Chalons, 1912
 
Weighing with a steelyard, 1547. Artist: Gaultherius Rivius
 
Christopher Wren, English architect, mathematician and physicist, early 20th century
 
Titus Salt, British woolstapler and industrialist, c1880
 
Bristol from Rownham Ferry 1841
 
Crinan Canal at Lochgilphead, Scotland, 1891
 
Carglaze tin mine, near St Austell, Cornwall, England, c1825, (1837)
 
Chirk Aqueduct on the Ellesmere Canal, c1829. Artist: Thomas Barber
 
Suspension bridge over the Conwy estuary, Wales, c1840
 
Suspension bridge over the Conwy estuary, Wales, c1840. Artist: Newman & Co
 
Chain pier, Brighton, Sussex, c1889
 
Waterloo Bridge, London, across the Thames, 1817. Artist: Thomas Hosmer Shepherd
 
Southwark Bridge from Bank Side London, 1817. Artist: Thomas Hosmer Shepherd
 
The Engineer 1867
 
Dee Viaduct, Vale of Llangollen, on the Shrewsbury, Wales and Chester Railway c1848
 
Watering cart for keeping down dust on roads, 1808. Artist: William Henry Pyne
 
Rail mounted coal cutting machine, 1864
 
Boy pushing a truck loaded with coal from the coal face to the bottom of the pit shaft, c1848
 
Coal mining: sending baskets (corves) of coal to the surface of a mine, 1852
 
The coal miner carrying his tools and safety his lamp, 1890
 
Boy putters moving coal in a narrow seam, Lancashire, England, 1848
 
Preparation of copper and silver to be alloyed for production of coins, 1683
 
Justus von Liebig, German chemist, c1860
 
Justus von Liebig, German chemist, 1866
 
Justus von Liebig, 19th century German chemist
 
John Lubbock, first Baron Avebury, English banker, archaeologist, naturalist and politician, c1880
 
Fossil hunting in Cherry Hinton chalk pit, Cambridgeshire, 1822
 
Discovery of iguanodon fossils, Bernissart, Belgium, 1878 (c1880)
 
Dream Lead Mine, near Wirksworth, Derbyshire, 1881
 
Armour Company's pig slaughterhouse, Chicago, Illinois, USA, 1892
 
Armour Company's pig slaughterhouse, Chicago, Illinois, USA, 1892
 
Armour Company's pig slaughterhouse, Chicago, Illinois, USA, 1895
 
Armand Peugot's first motor car, 1890
 
Three-wheeled Benz motor car, 1886
 
Laying a Macadam road surface and compacting it with a steam road roller, Paris, c1900
 
Laying bitumen road surface in a Paris street, c1900
 
Laying an asphalt-based surface in a Paris street, c1900