Prompt
Generate a realistic image of a middle-aged American man from the late 19th and early 20th centuries, dressed in formal attire, possibly a suit and tie, with a slight smile and an air of confidence. He should be seated in a study or laboratory setting with books, papers, and possibly some scientific equipment in the background, reflecting his work as a chemist and physiologist. The style should be reminiscent of a formal portrait from the early 20th century.
