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