October 20, 1905.] 



SCIENCE. 



487 



iodized plate to light, $300, trans- 

 ferred to this purpose.) 

 1867. Wolcott Gribbs. For repairing 

 Meyerstein spectrometer belonging to 

 the academy 100 



1869. Joseph Winlock. For purchase of 

 spectroscopic instruments for observa- 

 tions of the solar eclipse of August, 



1869 . 300 



1870. Benjamin Apthorp Gould. For 

 photometric and spectroscopic appa- 

 ratus for the observatory at Cordova. 

 (Apparatus subsequently purchased by 



the Argentine government. ) 500 



1875. John Trowbridge. Improvement of 

 magneto-electric machine and induc- 

 tion coil 500 



1876. Henry A. Rowland. New determina- 

 tion of mechanical equivalent of heat. 600 



Samuel P- Langley. Researches on radi- 

 ant energy 600 



1877. Benjamin 0. Peirce, Jr. Investiga- 

 tion of the conduction of heat in the 

 interior of bodies. ($60, only, called 



for.) 200 



Edward C. Pickering. Atmospheric re- 

 fraction 520 



1878. Wolcott Gibbs, John Trowbridge, Ed- 

 Avard C. Pickering. Experiments on 

 photometry and polarimetry. (A 

 small portion only of this appropria- 

 tion was called for. ) 500 



Charles A. Young. In aid of observations 

 on solar eclipse of July 29, 1878. (Ap- 

 propriation not called for.) 300 



Xathaniel S. Shaler. Investigation on 

 loss of internal heat of earth in the 

 neighborhood of Boston. (Appropria- 

 tion not called for. ) 200 



William W. Jacques. Experiments on 

 the distribution of heat in the spec- 

 trum 100 



Wolcott Gibbs, Edward C. Pickering, 

 John Trowbridge. Determination of in- 

 dices of refraction. (A small portion 

 only of this appropriation was called 

 for. ) 500 



1879. John Trowbridge. Heat developed 

 by magnetization and demagnetization 



of magnetic metals 200 



William W. Jacques. Radiation at high 



temperatures 200 



William A. Rogers. To procure a metric 



standard of length 350 



1880. Silas W. Holman. Viscosity of gases 250 

 Wolcott Gibbs. Construction of dynamo- 

 electric machine of a new plan 150 



Samuel P. Langley. Distribution of 



heat in diffraction spectrum 300 



1882. Edward C. Pickering. Stellar photog- 

 raphy, 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 Max- 

 well's theory of light 50 



1884. Rumford Committee. For purchase 



of Rowland grating .' 40 



William H. Pickering. Experiments in 



photography 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 con- 

 stant temperatures 100 



John Trowbridge. Effect of changes of 



temperature on magnetism 100 



1885. William A. Rogers. For construc- 

 tion of constant temperature room. 

 (Addition to former 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 ob- 

 servations on the heat of the human 



body. ($100, only, called for.) 500 



John Trowbridge. Standard of light. 

 (Appropriation subsequently trans- 

 ferred to another research, viz., radiant 



energy. ) 250 



Charles R. Cross. Thermo-electric ef- 

 fect in Munich shunt method. (Ap- 

 propriation not called for. ) 75 



1887. John Trowbridge. Investigations 

 on radiant energy. (Appropriation of 

 1886 for standard of light, $250, trans- 

 ferred to this purpose.) 



Charles R. Cross and Silas W. Holman. 



Thermometry 250 



Erasmus D. Leavitt, Jr. Investigations 

 upon a pyrometer. (Appropriation 

 not called for.) 250 



John Trowbridge. Metallic spectra 250 



