MAGNETIC TERM-DAY OBSERVATIONS 



MAGNETIC OBSERVATORY IN THE SMITHSONIAN GROUNDS, WASHINGTON, D. C. 



Latitude 38 53' 14". Longitude 77 1' 10" (5A. 8m. 5s.) west of Greenwich. 



DIFFERENTIAL OBSERVATIONS OF DECLINATION IN 1855. 



The reading telescope was refitted and supplied with a new scale. Increasing telescopic 

 scale readings denote a westerly movement of the north end of the magnetic bar. 



NOVEMBER 33 and 34, 1855. 



