The_Invention_of_Surgery

John Collins Warren (1778–1856), founder (and dean) of Harvard Medical School and chief of
surgery. At the conclusion of the first public demonstration of ether anesthesia, declared,
“Gentlemen, this is no humbug.” John Collins Warren, line engraving by S. A. Schooff, 1890,
after G. Stuart, 1807. Wellcome Collection.