
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1838
1801-1840 (original); 1901 (model)
circa 1846
2000-100 BCE
1851
1849
1840
1842
1850
1837
1837
1833
1850
circa 1840
1849
1841
1842
1840-1850
1842
1848
1837
1850
1835
1834
1834
1834
1845
1845
1842
1841
1851
1838
1846
1844
1934
1845-1851
1837
1844
1835-1845
1863-7
1850
1836
1834-1844
1837
1839
1843
1840-1845
1839
1955; 1830