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Simon Flexner, 1909

Courtesy of the Museum of the City of New York

Although Simon Flexner often commented that he had consciously modeled himself after Welch, the two men could not have been more different. Flexner was punctilious to details; Welch's rooms were cluttered with books, papers, and unread manuscripts. Flexner was self-contained, soft-spoken, and slightly built; Welch was rotund, gregarious, fond of cheap cigars, amusement park rides, and baseball.

Their differences notwithstanding, the two men, working together, redirected pathology training at Hopkins form the traditional style of reading, listening, and memorizing to that of seeing and doing. Welch served on the board of scientific advisors of The Rockefeller Institute for thirty-two years.


Simon Flexner, Rockefeller Institute


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