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History of Science
 
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Early Microscopes - Optical Institute - Wetzlar 
Carl Kellner founded what was named the Optical Institute in Wetzlar Germany in 1849. By 1851 he employed twelve workmen and was producing his first microscopes.
http://www.antique-microscopes.com/kellner/kellner1.html    More Info
Science Timeline 
History of science timeline for biology, chemistry, physics, geology, mathematics, and philosophy of science. This includes evolution, biochemistry, molecular biology, immunology, paleontology, neurology, psychology, cognition, astronomy, astrophysics, logic, computer simulation, linguistics, etc.
http://www.sciencetimeline.net/    More Info