Portrait of Hermann Ludwig Ferdinand von Helmholtz, who studied physiological phenomena, paving the way for acceptance of the basic principle of energy conservation in physiology.
Photograph of the Oxford School of Physiology. Included are Sir Charles Sherrington, Sir Gowland Hopkins, Prof. H. M. Vernon, E. A. Woods, Eustace H. Chiver, “George,” Wilder Penfield, Emile Hohman, Miss Collier, C. F. Krige, Prof. Scott, and W....