
Early inhaler for ether anaesthesia
1847-1848
1847-1848
circa 1846
1851
1848
1852
1839 (original); circa 1988 (replica)
1846
1849
circa 1848
1801-1840 (original); 1901 (model)
1851
1853
1849
1855
1854
1853
1850
circa 1854
1850
circa 1854
1855
1849
1846
1850
1847
1851
1846
1934
1849
1851
1955; 1830
1849
1855
1848-1852
1854
1893-4
1863-7
1850
1851
1852
2000-100 BCE
1855
1852
1855
circa 1854
1846
1851
1849
1849
1990-96