
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1853-1857
1801-1840 (original); 1901 (model)
circa 1846
2000-100 BCE
1851
1849
1855
1854
1850
circa 1854
1850
circa 1854
1855
1849
1850-1856
1848
1850
1850-1857
1856
1855
1856
1848-1852
1854
1851
1846
1934
1863-7
1850
1853
1853
1852
1955; 1830
1849
1846
1851
1857
1847
1893-4
1857
1852
circa 1854
1846
1849
1849
1990-96
1853
1846-1855
1853-1857
1855