Compound Microscope
1860-1865
1860-1865
circa 1856
circa 1853; 1853
1855-1865
circa 1850
1860-1865
1860-1870
1861
1842
1860; 1860
circa 1860
1855-1865
1870-1880
circa 1860
1839-1845
1860-1870
1855-1865
1860-1880
1855-1865
circa 1858
1855
1855-1865
1860
1835-1878
1845-1855
1860
1830-1850
1870-1890
circa 1842
1855-1857
1860
1850-1855
1860-1870
circa 1855
1860
1855-1865
1850-1860
1851-1875
1856
1860
1855-1865
1860-1870
1860
circa 1860
1850-1860
1860-1870
1855-1860
1875-1900
1860
1860