218 Astronomical and Magnetical Observations. [March, 



Comparison of the Variations in the Years 1813, 1814, and 1815. 



In deducing the mean of the observations, that of the morning 

 of Jan 30 's rejected, the variation exceeding that of any former 

 day, without any apparent cause. 



Jan. IS. — ^The needle in the morning unsteady, and followed by 

 a fall of snow. During the fall the needles were quite steady. 



Jan. 27. — Needles unsteady at noon : the wind afterwards blew 

 fresh from the S. E., accompanied with snow. 



Feb. 12. — The needles at noon vibrated 14' 40''' at intervals. 

 The wind blew strong from the S. W. The wind afterwards 

 increased, and shifted to the westward, accompanied with hard rain 

 and showers of hail. 



D • f 11 < Between noon of the 1st Jan. 

 Rain fallen ^ Between noon of the Ist Feb. 



0"694 inche*. 



