
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1801-1840 (original); 1901 (model)
circa 1846
2000-100 BCE
1851
1849
1850
1849
1845
1845
1850
1845
1852
1955; 1830
1850
1849
1846
1851
1848
1847
1848-1852
1893-4
1851
1846
1934
1845-1851
1863-7
1850
1851
1852
1849
1845
1852
1846
1849
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1851
1846
1772 (original); 1919 (model)
1846
4000-2001 BCE
1851
1849
1849
1990-96
1830 (original); 1967 (model)
circa 1850s
1850
1930 (replica); 1834 (original)