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.
Portrait showing a number of soldiers in front of Buckingham Palace. The Queen is on a balcony above them. Portrait drawn by R. Hind and engraved by G. Greatbach. From the collection of Howard A. Kelly, M.D., No. 28.
Publisher: London: The London...