Cell-timeline.docx

Seneca 65 A.D. -

Reported that glass globules filled with water aided in seeing those things difficult to see with the eye.

Claudius Ptolemy 127 – 151 -

Investigated magnification by means of curved surfaces.

Leonardo da Vinci 1485 -

Stressed the importance of using lenses for the study of small objects.

Hans and Zacharias Jansen 1590 -

Combined two convex lenses within a tube, thus constructing the forerunner of the compound microscope.

Robert Hooke 1665 -

Described microscopic structure of familiar substances including the cellular structure of cork.

Francesco Redi 1668 -

Disproved the phenomenon of spontaneous generation.

Anton van Leeuwenhoek 1674 -

Improved the polishing of lenses of short focal length to improve magnification.

Anton van Leeuwenhoek 1683 -

Discovered and described “animalcules”.

Caspar Wolff 1759 -

Proposed that all organs in animal embryos were made of globules which could be seen under a microscope.

Felice Fontana 1781 -

Described the nucleolus after finding it in the slime form an eel’s skin.

Jean Baptiste de Lamarck 1809 -

Declared that cellular tissue is the general matrix of all organization.

Henri Dutrochet 1824

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Stated that all organic tissues are actually globular cells of exceeding smallness, united by simple adhesive forces.

Pierre Turpin 1826 -

Reported his observations of cell division.

Franz Meyen 1830 -

Stated that each cell forms an independent, isolated whole it nourishes and builds itself up.

Robert Brown 1831 -

Published his observations reporting the discovery and widespread occurrence of nuclei in cells.

Matthias Schleiden 1838 -

Discovered that plant parts are made of cells.

Hugo von Mohl 1839 -

Carefully described details of mitosis in plants.

Theodor Schwann 1839 -

Discovered that animal parts are made of cells.

Rudolph Virchow 1855 -

Stated that all living cells come only from other living cells.

Gregor Mendel 1866 -

Published his investigations of plant hybrids.

Anton Schneider 1873 -

Observed and described chromosomes during cell division.

Crick and Watson 1951-1953 -

Discovered the DNA.

Caspar Wolff 1759 Anton van Leeuwenhoek 1683 -

Felice Fontana 1781 -

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Discovered and described “animalcules”.

Proposed that all organs in animal embryos were made of globules which could be seen under a microscope.

Jean Baptiste de Lamarck 1809

Described the nucleolus after finding it in the slime form an eel’s skin.

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Declared that cellular tissue is the general matrix of all organization.

Henri Dutrochet 1824 -

Stated that all organic tissues are actually globular cells of exceeding smallness, united by simple adhesive forces.

Franz Meyen 1830 -

Stated that each cell forms an independent, isolated whole it nourishes and builds itself up.

Pierre Turpin 1826 -

Reported his observations of cell division.

Robert Brown 1831 -

Published his observations reporting the discovery and widespread occurrence of nuclei in cells.

Matthias Schleiden 1838 -

Discovered that plant parts are made of cells.

Theodor Schwann 1839 -

Discovered that animal parts are made of cells.

Gregor Mendel 1866 -

Published his investigations of plant hybrids.

Crick and Watson 1951-1953 -

Discovered the DNA.

Hugo von Mohl 1839 -

Carefully described details of mitosis in plants.

Rudolph Virchow 1855 -

Stated that all living cells come only from other living cells.

Anton Schneider 1873 -

Observed and described chromosomes during cell division.

Democritus 460 – 370 B.C -

All things are composed of minute, indestructible, invisible particles of pure matter.

Claudius Ptolemy 127 – 151 -

Investigated magnification by means of curved surfaces.

Hans and Zacharias Jansen 1590 -

Combined two convex lenses within a tube, thus constructing the forerunner of the compound microscope.

Francesco Redi 1668 -

Disproved the phenomenon of spontaneous generation.

Seneca 65 A.D. -

Reported that glass globules filled with water aided in seeing those things difficult to see with the eye.

Leonardo da Vinci 1485 -

Stressed the importance of using lenses for the study of small objects.

Robert Hooke 1665 -

Described microscopic structure of familiar substances including the cellular structure of cork.

Anton van Leeuwenhoek 1674 -

Improved the polishing of lenses of short focal length to improve magnification.