
Early inhaler for ether anaesthesia
1847-1848
1847-1848
1860
1853-1857
1838
1850-1860
1830 (original); 1967 (model)
1862
1842
1860
1850-1859
1851
1850-1859
1853
1854
1837
1837
circa 1854
1850
circa 1854
circa 1840
1860
1849
1842
1840-1850
1857
1841
1862
circa 1860
circa 1861
1835
1837
1847
1840-1851
1859
1855
1856
1848-1852
1840-1860
1858
1841
1851
1838
1846
1844
1857-1858
1845-1851
1857-1858
1840-1860
1837
1844