Smithsonian Institution, June \st, 1851. 

 This Ephemeris of the Planet Neptune for the year 1852, prepared for the Nautical Almanac, 

 is presented for publication in the Smithsonian Contributions, by authority of the Hon. Wm. A. 

 Graham, Secretary of the Navy. 



Signed, JOSEPH HENRY, 



Secretary of the Smithsonian Institution. 

 CHARLES HENRY DAVIS, Lieut., 



Superintendent of the JCautical Almanac. 



