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Dr. William Setchell was a professor at the University of California at Berkeley. Thomas Harper Goodspeed, also a professor there, introduced him to Arthur C. Pillsbury. Dr. Setchell's Biography can be read online. There is no mention of microscopic motion pictures, or Arthur C. Pillsbury, in Setchell's biography though relatively minor matters are chronicled. This reflects a pattern of behavior which raises questions to be answered.