822 PROCEEDINGS OF THE AMERICAN ACADEMY 



The report of the committee on the Revision of the 

 Statutes was taken from the table, and its recommendations 

 discussed. But, in accordance with the provisions of the 

 statutes, action was deferred until the next stated meeting. 



The following papers were then presented : — 



" On the Periodic Changes in Right Ascension." By Mr. 

 W. A. Rogers. 



" On the Tempel Nebula in the Pleiades." By Mr. 

 Trouvelot. 



" On the Planet Saturn." By Mr. Trouvelot. 



" On a New Form of Bunsen Battery." B}^ Dr. Wolcott 

 Gibbs. 



" On the Milk Supply of Boston." By Mr. S. P. Sharpies. 



" On a New Genus of Harpagonella." By Dr. Asa Gray. 



Six hundred and eighty-sixtli Meeting:. 



January 11, 1876. — Monthly Meeting. 



The Peesident in the chair. 



The following papers were presented : — 



" Improvements in Inland Navigation Resulting from the 

 Introduction of a New System of Movable Dams." By Pro- 

 fessor "William Watson. 



" DescrijDtion of an Ajiparatus to Measure Directly the 

 Strain to which the Different Bars of an Iron Lattice Girder 

 are exposed." By Professor William Watson. 



" On the so-called Etheric Current." B}^ Professor John 

 Trowbridge. 



" On some New Methods of Topographical Surveying." 

 By Professor E. C. Pickering. 



Six hundred and eighty-seventh Meeting, 



January 26, 1876. — Stated Meeting. 



The President in the chair. 



The Corresponding Secretary read letters from Messrs. 



