1907

for his optical precision instruments and the spectroscopic and metrological investigations carried out with their aid

for his biochemical researches and his discovery of cell-free fermentation

in recognition of his work on the role played by protozoa in causing diseases

in consideration of the power of observation, originality of imagination, virility of ideas and remarkable talent for narration which characterize the creations of this world-famous author

for his work in the press and in peace meetings, both public and private, for an understanding between France and Italy

for his decisive influence upon the conduct and outcome of the Hague and Geneva Conferences