'Dr Syntax and his wife making an experiment in pneumatics', print, London, England, 1820
1820
1820
2000-100 BCE
1893-4
1863-7
1705-1737
1772 (original); 1919 (model)
1819
1775-1799 (original); 1900-1907 (model)
1990-96
1820
4000-2001 BCE
1856-01
1898-01
1899/11
1899/11
1819
1774; 1923
1865-05
1864-10
1867-04
1870-10
1819
1819
1819
1642-1649 (original); 1883 (model)
2000-100 BCE
1883-01
1936
1730; 1967
1836-02
1872-08
1820
4000-30 BCE
10000-5000 BCE
1977; 1204-1206
10000-500 BCE
1972-3
2500 BCE
2000-1000
1880-120
1860-1820
1819
1860-1715
1872-3
1820
1819-1820
2000-100 BCE
2000-1001 BCE
1851-1800
1820