
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1801-1840 (original); 1901 (model)
circa 1846
2000-100 BCE
1849
1840
1842
1850
1849
1841
1842
1845
1845
1850
1845
1842
1840-1845
1955; 1830
1850
circa 1840
1843
1849
1840-1850
1846
1842
1848
1847
1840
1841
1893-4
1846
1844
1934
1844
1863-7
1850
1840
1849
1845
1842
1841
1846
1849
1840
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1846
1844
1772 (original); 1919 (model)
1846