488 



SCIENCE. 



[N. S. Vol. XXII. No. 564. 



1888. John Trowbridge. Metallic spectra. 

 (Addition to former appropriation.) . 500 



William H. Pickering. For observations 



on solar eclipse of January, 1889 500 



1889. Charles C. Hutching. Investigation 



on lunar radiation 250 



Edwin H. Hall. Heat development in 



cylinder of steam-engine 100 



Henry A. Rowland. Metallic spectra . . . 500 



1890. Edwin H. Hall. Investigations on 

 cylinder temperature 100 



Benjamin 0. Peirce. Temperature 

 changes in interior of solids. (Ap- 

 propriation not called for. ) 200 



1892. Daniel W. Shea. Velocity of light 



in magnetic field 250 



Benjamin 0. Peirce. Propagation of heat 



within certain solid bodies 200 



Henry A. Rowland. Investigations on 



solar spectrum 250 



1893. William A. Rogers. Investigation 



on the pulsation of thermometers 175 



William H. Pickering. Observations in 

 Arizona on transparency and steadiness 

 of the air and on the changes in tem- 

 perature on the planet Mars. (Ap- 

 propriation not called for.) 500 



1894. Frank A. Laws. Thermal conduc- 

 tivity of metals 300 



Edward L. Nichols. Radiation from car- 

 bon at different temperatures 250 



1895. Edwin H. Hall. Thermal conduc- 

 tivity of metals 250 



Arthur G. Webster. Velocity of electric 



waves 250 



Benjamin 0. Peirce. Thermal conduc- 

 tivities of poor conductors 250 



1896. Henry Crew. Electric, chemical and 

 thermal effects of electric arc 400 



Robert 0. King. Thomson effect in 



metals 100 



1897. Arthur G. Webster. Velocity of 

 light. (Appropriation not called for.) 500 



George E. Hale. Construction of spectro- 



heliograph 400 



Arthur G. Webster. Construction of re- 

 volving mirror 250 



Arthur G. Webster and Robert R. Tatnall. 



The Zeeman effect 100 



1898. Wallace C. Sabine. Researches on 

 ultra-violet radiation 400 



Albert A. Michelson. New form of dif- 

 fraction grating. (Echelon spectro- 

 scope. ) 500 



Theodore W. Richards. For the construc- 

 tion of a microkinetoscope, to be ap- 

 plied to a study of the birth and 

 growth of crystals 200 



1899. Wallace C. Sabine. Further re- 

 searches on ultra-violet wave-length . . 200 



Henry Crew. Spectrum of the electric 



arc 200 



Arthur G. Webster. Distribution of 

 energy in various spectra studied by 

 means of the Michelson interferometer 

 and the radiometer. (Appropriation 

 not called for. ) 200 



Edwin B. Frost. To aid in construction 

 of a spectrograph especially designed 

 for the measurement of stellar veloc- 

 ities in the line of sight 500 



1900. Edward C. Pickering. For con- 

 structing a new type of photometer to 

 be used in an investigation on the 

 brightness of faint stars, to be carried 

 out by cooperation with certain obser- 

 vatories possessing large telescopes. . . 500 



Theodore W. Richards. Transition tem- 

 peratures of crystallized salts 100 



Arthur L. Clark. Molecular properties 

 of vapors in the neighborhood of the 

 critical point 250 



Charles E. Mendenhall. Investigations 

 on a hollow bolometer. ($100, only, 

 called for.) 200 



George E. Hale. Application of the 

 radiometer to the study of the infra- 

 red spectrum of the chromosphere .... 500 



Arthur A. Noyes. Effect of high tem- 

 peratures on the electrical conductivity 

 of salt solutions 300 



1901. Theodore W. Richards. Research on 



the expansion of gases 500 



Henry Crew. Order of appearance of the 



different lines of the spark spectrum . . 100 

 Robert W. Wood. Anomalous dispersion 



of sodium vapor 350 



Arthur G. Webster. For purchase of 



fluorite plates 65 



1902. Ernest F. Nichols. For the purchase 

 of a spectrometer, in furtherance of a 

 research on resonance in connection 



with heat radiations 300 



Theodore W. Richards. For the construc- 

 tion of a mercurial compression pump 

 to be used in a research on the Joule- 

 Thomson effect. (Appropriation sub- 

 sequently transferred to another re- 



