DIUBJfAL VARIATI05f OF MAGNETIC DECLINATION AT MAKERSTOUN 1845-1846. 
Tmiw.Soi/. SocBditi. Vol.XIZ Faitll. I'laUl. 
Sept-Teh 
Mar. - ^iLg. 
FosUivtf OT-dinate.9 indicate, ijwreasing 'Westerly BecUnaAow. Scale,. 1 Diy. = 2 mimites. 
— ^ Mean, of all. ■ -..Meatv of undisturbed. day.i. 
