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Adjudication of the Medals of the Royal Society for the year 1900, 
by the President and Council. 
The COPLEY MEDAL to Professor Marcellin Berthelot, For. Mem.R.S., for 
his brilliant services to Chemical Science. 
The RUMFORD MEDAL to Professor Antoine Henri Becquerel, for his 
discoveries in Radiation proceeding from Uranium. 
A ROYAL MEDAL to Major Percy Alexander MacMahon, F.R.S., for the 
number and range of his contributions to Mathematical Science. 
A ROYAL MEDAL to Professor Alfred Newton, F.R.S., for his eminent 
contributions to the science of Ornithology and the Geographical Distribution of 
Animals. 
The DAVY MEDAL to Professor Guglielmo Koerner, for his brilliant investi¬ 
gations on the Position Theory of the Aromatic Compounds. 
The DARWIN MEDAL to Professor Ernst Haeckel, for his long-continued 
and highly-important work in Zoology, all of which has been inspired by the spirit 
of Darwinism. 
The Bakerian Lecture for the year 1900, “ On the Specific Heat of Metals 
and the Relation of Specific Heat to Atomic Weight,” was delivered by Professor W. 
A. Tilden, F.R.S., on March 8, 1900. 
The Croonian Lecture for the year 1900, “ On Immunity with Special Reference 
to Cell Life,” was delivered by Professor Dr. Paul Ehrlich, on March 22, 1900. 
VOL. CXCV.—A. 
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