Bausch & Lomb Optical Co.
Serial number 4541
"The Williams Petrological" microscope, c.1888
Pat. Oct. 3, 1876 and Oct 13, 1885
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This microscope was designed in 1887 by Dr. George H. Williams, Professor of Mineralogy and Inorganic Geology, at the Johns Hopkins University. It is based on the Bausch & Lomb "Model" microscope and was the first American designed and manufactured petrological microscope. The instrument is described in an article published in The American Journal of Science, pg. 114, 1888. |
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