
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1838
1801-1840 (original); 1901 (model)
circa 1846
2000-100 BCE
1849
1840
1842
circa 1840
1849
1841
1842
1842
1848
1845
1845
1842
1841
1838
1846
1844
1934
1844
1863-7
1839
1843
1840-1845
1839
1955; 1830
1849
1846
1838
1845
1847
1840
1893-4
1845
1842
1841
1838
1846
1839
1839
1849
1849
1990-96
1840
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1930 (replica); 1834 (original)