The present author gives a survey on the development of microscopy by centuries: 16th Invention of the simple microscope--at the end of the century the compound microscope was invented. 17th HOOKE's microscope was the leading of this century--binocular microscope--introduction of screw fine adjustment. 18th The first microscope in America came to Yale in 1734. CHARLES SPENCER started to manufacture microscopes at the continent in 1847. 19th Establishment of precondition for electron microscopy. ZEISS introduced apochromatic optics. The Royal Microscopical Society was established in 1858. The American Microscopical Society in 1878, The New York Microscopical Society in 1877. 20th 1906 invention of the ultraviolet microscope, 1911 of the fluorescence microscope, 1931 of the electron microscope, the first American in 1938, 1932 the centrifuge microscope, 1932 the phase contrast microscope. The first American phase contrast microscope in 1944, 1942 phosphorescence microscope, in the 1950th the interference and x-ray microscopes.