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Making Edison light bulbs, 1880. Artist: Unknown
 
Cretin aged 15, c1890. Artist: Unknown
 
Glass cutter decorating table ware on a carborundum wheel, 1867. Artist: Unknown
 
Various pumps for draining ships, 1816. Artist: Unknown
 
Various pumps for raising water, 1816. Artist: Unknown
 
Boring wooden pipes, and casting and drawing iron pipes, c1825. Artist: Unknown
 
The Wear above Sunderland Iron Bridge, c1829.  Artist: R Francis
 
Villa Tournesol, 1899. Artist: Unknown
 
Potato peeler, 1899. Artist: Unknown
 
Using a laryngoscope to aid the removal of a polyp from the throat, c1890. Artist: Unknown
 
Painting a wound with an antiseptic solution, c1890. Artist: Unknown
 
Typical enlarged spleen of a Malaria patient, c1890. Artist: Unknown
 
Hippolyte Fizeau, French physicist, 1870. Artist: Unknown
 
Joseph von Fraunhofer, German physicist, c1895. Artist: Unknown
 
Alexander von Humboldt, German naturalist, c1830. Artist: William Home Lizars
 
John Ross, British polar explorer and naval officer, 19th century. Artist: Unknown
 
Christian Friedrich Schonbein, German chemist, c1898. Artist: Unknown
 
Inclined plane powered by water wheel in used on a canal, 1796. Artist: Unknown
 
Inclined planes for use on canals, 1796. Artist: Unknown
 
Double inclined plane for moving tub boats from one level to another on a canal, 1796. Artist: Unknown
 
Washing ore to extract gold, 1683. Artist: Unknown
 
Furnace for processes where protracted heat required, such as cementation, 1580. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Distillation of Nitric Acid, 1683. Artist: Unknown
 
Laboratory for refining gold and silver, showing typical laboratory equipment, 1683. Artist: Unknown
 
Production of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown
 
Checking the quality of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown
 
Crystallization of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown
 
Von Guericke's demonstration of the strength of a vacuum, 1654 (1672). Artist: Unknown
 
Experiment designed to show that air has weight, 1672. Artist: Unknown
 
Von Guericke's demonstration of the power of air pressure, 1672. Artist: Unknown
 
Pound lock, 1664. Artist: Unknown
 
Roller bridge or inclined plane for transferring vessels from one level of a canal to another, 1737. Artist: Unknown
 
Cashew nut - Anacardium occidentale, c1798. Artist: Unknown
 
Richard Owen, British naturalist, c1856 (1891). Artist: Unknown
 
Joseph Louis Gay-Lussac, French chemist and physicist, c1860. Artist: Unknown
 
Joseph Louis Gay-Lussac, French chemist and physicist, c1895. Artist: Unknown
 
Joseph Louis Gay-Lussac, French chemist, physicist and balloonist, c1870. Artist: Unknown
 
Experiment to calculate the speed of sound in air, Paris, 1822 (1873). Artist: Amedee Guillemin
 
Down House, near Beckenham, Kent, from the garden, 1883. Artist: Unknown
 
Darwin's study at Down House, his home near Beckenham, Kent, 1883. Artist: Unknown
 
Charles Darwin, English naturalist, c1880. Artist: Unknown
 
Charles Darwin, English naturalist, 1883. Artist: Unknown
 
Charles Darwin, English naturalist, 1875. Artist: Edward Linley Sambourne
 
Charles Darwin (1809-1882), English naturalist, in his greenhouse. Artist: Unknown
 
Andreas Vesalius, 16th century Flemish anatomist. Artist: Unknown
 
Andreas Vesalius, 16th century Flemish anatomist, c1789-c1798. Artist: Unknown
 
Title page of Samuel Sturmy, Mariners Magazine, London, 1669. Artist: Samuel Sturmy
 
Surveying, from Levinus Hulsius Instrumentorum Mechanicorum, Frankfurt-am-Main, 1605. Artist: Levinus Hulsius
 
Surveyors using quadrants to measure the height of a tower, c1617-c1619. Artist: Robert Fludd
 
Forms of astrolabe in use for surveying, 1650. Artist: Unknown
 
A surveyor's level, 1547. Artist: Unknown
 
Planimeter used in conjunction with a set square for surveying, 1605. Artist: Unknown
 
Reiner Gemma Frisius, Dutch astronomer, geographer, cartographer and mathematician, 1539. Artist: Unknown
 
Measuring the distance of an inaccessible object by triangulation using a hinged staff, 1617-1619. Artist: Unknown
 
Finding the angular distance between two edges of a wood using a cross-staff, 1617-1619. Artist: Unknown
 
Colt Frontier revolver, invented by Samuel Colt (1814-62), c1890. Artist: Unknown
 
Leonhard Euler (1707-1783), Swiss mathematician, 1801. Artist: Unknown
 
Leonhard Euler, 18th century Swiss mathematician, 1874. Artist: Unknown