Smithsonian Institution, April lOM, 1S49. 

 This Ephemeris of the planet Neptune is printed as an appendix to the second volume of the Smith- 

 sonian Contributions, for the purpose of prompt distribution among practical astronomers, with the hope 

 that it may furnish facilities for increasing the number of observations of the opposition and quadratures 

 of Neptune, and for the further prosecution of the study of its theory. 



JOSEPH HENRY, 

 Secretary of the Smithsonian Institution. 



