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Headword Date Article Type
Johannes Kepler describes how the eye focuses light 1604 Context Note
Protozoa discovered 1676 Context Note
Spermatozoa observed 1677 Context Note
Bacteria observed 1683 Context Note
Malthusian speculations on human population 1798 Context Note
Gideon Mantell discovers the fossilized skeleton of an iguanodon dinosaur 1822 Context Note
Charles Darwin's voyage on the Beagle 1831 - 1836 Context Note
Discovery of cellular composition of living plant tissue 1838 Context Note
Discovery of cellular composition of living animal tissue 1839 Context Note
Publication of John Gould's The Birds of Australia in London 1840 - 1848 Context Note
Constancy Principle [Konstanzprinzip] 1850 Context Note
Charles R. Darwin and Alfred Wallace independently propose natural selection theories of evolution 1858 Context Note
Darwin's theory of evolution creates controversy 1859 Context Note
Naturalist Henry Bates identifies 8000 new insects from the Amazon region 1859 Context Note
Darwinism in Literature 1859 Context
Laws of genetic inheritance formulated by Gregor Mendel 1865 Context Note
Henry J Heinz begins to produce and advertise tomato ketchup 1876 Context Note
Fertilized eggs are shown to possess both male and female nuclei 1876 Context Note
Dr Pemberton produces Coca-Cola 1886 Context Note
The boll weevil arrives in Texas 1892 Context Note

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