
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1830 (original); 1967 (model)
1851
1853
1854
circa 1854
1850
circa 1854
1849
1847
1855
1848-1852
1851
1846
1845-1851
1850
1851
1852
1849
1855
1854
1855
1849
1853
1852
1955; 1830
1849
1846
1848
1850
1845-1855
1845
1893-4
1934
1863-7
2000-100 BCE
1845
1850
1851
1845
1845
1852
circa 1854
1849
1849
1990-96
1850
circa 1850
circa 1846
1846