io THE RUMFORD FUND 



1883. HEXRY AUGUSTUS ROWLAND, of Baltimore, for his researches 

 in light and heat. 



1886. SAMUEL PIERPONT LAXGLEY, of Allegheny, for his researches 

 in radiant energy. 



1888. ALBERT ABRAHAM MICHELSON, of Cleveland, for his deter- 

 mination of the velocity of light, for his researches upon 

 the motion of the luminiferous ether, and for his work 

 on the absolute determination of the wave-lengths of 

 light. 



1891. EDWARD CHARLES PICKERING, of Cambridge, for his work on 

 the photometry of the stars and upon stellar spectra. 



1895. THOMAS ALVA EDISON, of Orange, N. J., for his investigations 

 in electric lighting. 



1898. JAMES EDWARD KEELER, of Allegheny, for his application of 



the spectroscope to astronomical problems, and especially 

 for his investigations of the proper motions of the nebulae, 

 and the physical constitution of the rings of the planet 

 Saturn, by the use of that instrument. 



1899. CHARLES FRANCIS BRUSH, of Cleveland, for the practical de- 



velopment of electric arc-lighting. 



1900. CARL BARUS, of Providence, for his various researches in 



heat. 



1901. ELIHU THOMSON, of Lynn, for his inventions in electric 



welding and lighting. 



1902. GEORGE ELLERY HALE, of Chicago, for his investigations in 



solar and stellar physics and in particular for the inven- 

 tion and perfection of the spectro-heliograph. 



1904. ERNEST Fox NICHOLS, of New York, for his researches on 

 radiation, particularly on the pressure due to radiation, 

 the heat of the stars, and the infra-red spectrum. 



The Rumford Fund of the Royal Society has been de- 

 voted solely to the award of the premium according to the 

 original provisions of that trust. For purposes of com- 



