OPPOSITION OF MARS, 1851-52. 



NAVAL OBSERVATORY, WASHINGTON. 



DECEMBER 17, 1851. 



The planet restless and indistinct no observations possible. 



DECEMBER 33, 1851. 



The difference of temperature between the exterior and interior of the dome (all the doors and windows being open) renders the stars so blurred 

 and indistinct as to make observations impossible. 



DECEMBER 36, 1851. 



No certain contact with the wire could be made within half a revolution of the micrometer. 



JANUARY 7, 1853. 

 No observations possible. 



