RUMFORD FUND. 359 



1S66. 7. Ogden N. Rood. Photometry. (Appropriation 4, 

 for relations of iodized plate to light, S300, trans- 

 ferred to this purpose.) 



1867. 8. WolcottGibbs. For repairing Meyerstein spectrom- 

 eter belonging to the Academy. (Additional to 

 5.) . . ' $100 



1869. 9. Joseph Winlock. For purchase of spectroscopic 



instruments for observations of the solar eclipse 



of August, 1869 300 



1870. 10. Benjamin Apthorp Gould. For photometric and 



spectroscopic apparatus for the Observatory at 

 Cordova. (Apparatus subsequently purchased 

 by the Argentine Government.) 500 



1875. 11. John Trowbridge. Improvement of magneto- 



electric machine and induction coil 500 



1876. 12. Henry A. Rowland. New determination of me- 



chanical equivalent of heat 600 



13. Samuel P. Langley. Researches on radiant energy 600 



1877. 14. Benjamin O. Peirce, Jr. Investigation of the con- 



duction of heat in the interior of bodies. ($60. 



only, called for.) 200 



15. Edward C. Pickering. Atmospheric refraction . 520 



1878. 16. Wolcott Gibbs, John Trowbridge, Edward C. 



Pickering. Experiments on photometry and 

 polarimetry. (A small portion only of this appro- 

 priation was called for.) 500 



17. Charles A. Young. In aid of observations on solar 



eclipse of July 29, 1878. (Appropriation not 

 called for.) . ' 300 



18. Nathaniel S. Shaler. Investigation on loss of 



internal heat of earth in the neighborhood of 

 Boston. (Appropriation not called for.) . . . 200 



19. William W. Jacques. Experiments on the dis- 



triljution of heat in the spectrum 100 



20. Wolcott Gibbs, Edward C. Pickering, John Trow- 



l)ridge. Determination of indices of refraction. 

 (A small portion only of this appropriation was 

 called for.) . . . " 500 



1879. 21. John Trowbridge. Heat developed by magnetiza- 



tion and demagnitization of magnetic metals . 200 

 22. William W. Jacques. Radiation at high tempera- 

 tures. (Additional to 19.) 200 



