i6 THE RUMFORD FUND 



SAMUEL P. LANGLEY. Distribution of heat in 



diffraction spectrum S300 



1882. EDWARD C. PICKERING. Stellar photography, with 



a view of obtaining a method of estimating the 



brightness of stars 500 



JOHN TROWBRIDGE. Thomson effect and allied 



subjects 250 



1883. JOHN TROWBRIDGE. Addition to last preceding 



appropriation 100 



FRANK N. COLE. Experiments on Maxwell's theory 



of light . 50 



1884. RUMFORD COMMITTEE, for purchase of Rowland 



grating 40 



WILLIAM H. PICKERING. Experiments in photog- 

 raphy 200 



JOHN TROWBRIDGE, EDWARD C. PICKERING, CHARLES 



R. CROSS. Experiments on standard of light . 300 



EDWARD C. PICKERING. Photometry 200 



WILLIAM A. ROGERS. Production of constant 



temperatures 100 



JOHN TROWBRIDGE. Effect of changes of temper- 

 ature on magnetism 100 



1885. WILLIAM A. ROGERS. For Construction of con- 



stant temperature room. (Addition to for- 

 mer appropriation) 82 



EDWARD C. PICKERING. Photometry 300 



WILLIAM H. PICKERING. Photography and new 



standard of light 300 



1886. WILLIAM H. PICKERING. Observations of Solar 



Corona, Eclipse of August, 1886 500 



HENRY P. BOWDITCH. Calorimetric observations 

 on the heat of the human body. ($100, only, 



called for) 500 



JOHN TROWBRIDGE. Standard of light (Appropri- 



