DIURNAL VARIATIONS OF THE TOTAL MAGNETIC FORCE AT MAKERSTOUN 1845 -1846 
Trans, Roy. Soo Edin. Vol. XIX. Part. PlateV- 
Mean 
PM 
AM 
Positive Ordinates indicate increasing Total Force. Scale, 1 Dwv-0-0001; Total. Foree 
Dec. feb. 
=1. 
nn Mean. of undisturbed days. 
pom, 
ae, 
~~ Mean of all. 
Enap bey bee Ateman, 
