1951

for their pioneer work on the transmutation of atomic nuclei by artificially accelerated atomic particles

for their pioneer work on the transmutation of atomic nuclei by artificially accelerated atomic particles

for their discoveries in the chemistry of the transuranium elements

for their discoveries in the chemistry of the transuranium elements

for his discoveries concerning yellow fever and how to combat it

for the artistic vigour and true independence of mind with which he endeavours in his poetry to find answers to the eternal questions confronting mankind

for having devoted his life to the fight against war through the promotion of social justice and brotherhood among men and nations