
Early inhaler for ether anaesthesia
1847-1848
1847-1848
circa 1846
1848
1838
1839 (original); circa 1988 (replica)
1846
circa 1848
1844
1801-1840 (original); 1901 (model)
1845
1840
1842
circa 1840
1839
1841
1840-1845
1839
1842
1846
1838
1847
1845
1845
1842
1840
1846
1844
1934
1844
1840
1842
1843
1955; 1830
1841
1893-4
1838
1863-7
2000-100 BCE
1842
1841
1838
1839
1846
1839
1839
1839
1990-96
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1840