
Early inhaler for ether anaesthesia
1847-1848
1847-1848
circa 1846
1801-1840 (original); 1901 (model)
1850
1849
1845
1845
1850
1850
1849
1846
1848
1847
1846
1934
1849
1849
1845
2000-100 BCE
1955; 1830
1893-4
1863-7
1850
1849
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1846
1772 (original); 1919 (model)
1846
1849
1849
1990-96
circa 1850s
1850
1930 (replica); 1834 (original)
circa 1850
circa 1848
1705-1737
1934
1850
1870-1877
1845
1846
1830 (original); 1967 (model)
4000-2001 BCE
1850
1990-95
1610; 1923
1642-1649 (original); 1883 (model)
1960-1979