3GG 



Aslrommical and Masnctical Observations. 



[May, 



Comparison of tite Monthly Variations in the Years 1813, 1814, 



and 1815: 



In deducing the mean of the observations, the morning ob- 

 servation of March 19, and the noon of March 24, are rejected, 

 the variation being so great. The wind on both days was from the 

 west, and the weather cloudy. 

 ' March 'i\. — Immersion uncertain to 10". 



Rain fallen 



J Between noon of the 1st Mar. > 

 \ Between noon of tlie 1st Apr,^ 



1-528 ir.cb. 



