The Buffalo Medical College laboratory was under guard, and the few scientists permitted entrance had been ordered not to discuss the experiments underway inside. Among the most reticent of them was Dr. Herman Matzinger, who told a journalist only that he “would have no leisure from his work,” the Buffalo Courier reported. It seemed like no one had rested since President McKinley died in the early morning hours of Saturday, September 14, 1901. Eight days prior Leon Czolgosz had shot McKinley twice, at close range, in front of hundreds of…