Oxford Science Archive (page 21)

Rene Descartes' model of the structure of the Universe, 1668 Unknown

Rene Descartes' illustration of the co-ordination of the senses, 1692 Unknown

Rene Descartes' idea of vision, showing the function of the eye, optic nerve and brain, 1692 Unknown

Rene Descartes' diagram of the human brain and eye, 1692 Unknown

Renard's tractor unit, showing towing attachment for trailers, French, 1904 Unknown

Renard's automobile train, showing coupling (top right) and a train of wagons, 1904 Unknown

Remnant of Supernova 1987A Unknown

Remains of a Nilometer, an ancient device for measuring the annual inundation of the Nile, c1885 Unknown

Releasing French army homing pigeons on board the transatlantic liner La Bretagne, 1898 Unknown

Reiner Gemma Frisius, Dutch astronomer, geographer, cartographer and mathematician, 1539 Unknown

Regular geometrical solids of various types, 1619 Unknown

Red squirrel (Sciurus vulgaris), tree-living rodent native to Europe and Asia, 1828 Unknown

Reconstruction of the Irish elk (Megaloceros), c1880 Unknown

Reconstruction of a medieval conception of the universe, 19th century? Anonymous

Rear-engined Benz Velo car, German, 1894 Unknown

Rear view of Charles Wheatstone's electric (railway) telegraph, 1850 Unknown

Reaper/haymaker sharpening his scythe with a whetstone, 19th century Unknown

Rape threshing, 1st November 1813 Robert Havell

Rain of frogs recorded in 1355 (1557) Unknown

Rail mounted coal cutting machine, 1864 Unknown

Radcliffe Observatory, Oxford, England, 1834 Unknown

Radcliffe Observatory, Oxford, 1862 Unknown

Rabbit seller, 1808 William Henry Pyne

Rabbit (Oryctolagus cuniculus), 1828 Unknown

Pythagoras, Ancient Greek mathematician and philosopher, 6th century BC (1833) Unknown

Public witness of the solar eclipse, London, c1870 Unknown

Public weighbridge used to weigh cattle in a market, 1867 Unknown

Ptolemy, Alexandrian Greek astronomer and geographer, late 15th century Pedro Berruguete

PSS Great Eastern on the ocean, 1858 Unknown

Professor Bergmann injecting a tuberculosis patient, 1891 Unknown

Production of sulphuric acid (Oil of Vitriol or H2S04), 1844 Unknown

Production of saltpetre (nitre, potassium nitrate, or KN03), 1683 Unknown

Producing salt by evaporating sea water in salt pans, 1556 Unknown

Producing salt by evaporating natural brine by pouring it into a pit of burning charcoal, 1556 Unknown

Producing indigo dye with slave labour: West Indies or Central America, 1725 Anonymous

Prize offered in Scientific American, October 1920, for an essay on Einstein's theory of relativity Unknown