370 PROCEEDINGS OF THE AMERICAN ACADEMY 



urer be authorized to transfer five hundred dollars ($500) to 

 the general fund." 



" Voted, That the list of periodicals contained in the records 

 of the Rumford Committee, June 12, 1878, be paid for, in- 

 cluding the binding, from June, 1878, to June, 1880, out of 

 the Rumford Fund." 



" Voted, That an appropriation of four hundred dollars 

 (|400) be made from the Rumford Fund for continuing the 

 purchase of books upon light and heat." 



These votes were severally confirmed by the Academy. 



Professor Cooke presented the printed Report of the Coun- 

 cil, and stated that the new volume of Proceedings would be 

 ready during the present month. 



Professor Peirce read the following papers : — 



" On the Reference of the Unit of Length to the Wave- 

 Lengths of Light." By Charles S. Peirce. 



" On the Meteoric Constitution of the Universe." By 

 Benjamin Peirce. 



Professor Pickering described the work now in progress at 

 the Harvard College Observatory upon Nebulse. 



The following papers were presented by title : — 



" The Temporary Change of Refrangibility in the Spec- 

 trum of Solar Protuberances." By Leopold Trouvelot. 



" On the Supposed Existence of Two Permanent Zones of 

 Solar Protuberances." By Leopold Trouvelot. 



" On the Coefficient of Expansion of Nickel-plated Steel 

 Bars." By William A. Rogers. 



The following committees were appointed: — 



Committee on Publication. 

 Alex. Agassiz, W. W. Goodwin, John Trowbridge. 



Committee on Library. 



Edward C. Pickering, Henry P. Bowditch, 



William R. Nichols. 



Auditing Committee. 

 Henry G. Denny, ■ Robert W. Hooper. 



