OPPOSITION OF MARS, 1851-52. 



NAVAL OBSERVATORY, WASHINGTON. 



DECEMBER 17, 1851. 



Tbe planet restless and indistinct no observations possible. 



DECEMBER 23, 1851. 



The difference of temperature between the exterior and interior of Uie 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 Die micrometer. 



JANUARY 7, 



No observations possible. 



All the comparisons at this opposition of Mars are taken with mean time chronometer 2019, Dent. 



