Schwann's microscope (no case)
1835
1835
circa 1860
1850-1859
1845
1849
1855
circa 1840
1837
1860
1846-1859
1840
1842
1850
1842
1851
1837
1834
1834
1834
1845-1855
1840-1850
1847
1853
1857
1842
1845
1845
1837
1832
1860
1850-1856
1858
1851
1858-03-02
1850-1859
1854
1837
1833
circa 1854
1850
circa 1854
1850-1860
1855
1858
1849
1841
1839
1835
1846
1848